For Combined Statics and Dynamics courses.This edition of the highly respected and well-known book for Engineering Mechanics focuses on developing a solid understanding of basic principles rather t...Descripción completa
Descripción: Lectures and notes in Statics (Handwritten).
Descrição: For Combined Statics and Dynamics courses.This edition of the highly respected and well-known book for Engineering Mechanics focuses on developing a solid understanding of basic principles rather t...
For Combined Statics and Dynamics courses.This edition of the highly respected and well-known book for Engineering Mechanics focuses on developing a solid understanding of basic principles rather t...
For Combined Statics and Dynamics courses.This edition of the highly respected and well-known book for Engineering Mechanics focuses on developing a solid understanding of basic principles rather t...
Solutions to Engineering Mechanics "RESULTANT OF ANY FORCE SYSTEM" 3rd Edition by Ferdinand SingerFull description
SOLUTIONS Engineering Mechanics
ENG MECHFull description
Dyanaamics 2nd
Link full download : http://testbankcollection.com/download/solution-manual-for-engineering-mechanics-statics-and-dynamics-2nd-edition-by-plesha-gray-costanzo/ Language: English ISBN-10: 00733803...
fo:r" o . lpl :r :o s o"a:t:r n ,t r r r !l€b o6 r sp r ttn6ctlrp,l/€r,; v r . , e . r . i r r , - ' p " , p " i i ! rtrd concoDts or
Etrlrn6€rrng X€cbanlca ltr e vory b.!lc and rpproscn to nelp tbo itudsntt und€.!tand
;;;.,:l:j":;
,ii;li;;
,",, ,r,r
uy;to!.ttc anO re"."
d6v6rop rher. ofdo!ry
Itllh ttro pre.€rt€d toptct, rhe u6r, wttt trave r vory cotrpran€rsrvastudy o( th6 aundr!€ntat prltrclDl€r ot li6ctatrrci,htch ar6 tppltcrbr; to v a r r. eE(nys ronre 6prrtancsr t c r l s l t u a t t o n 3 t r o r u a l l y e n c o q n t o r e; dl d 6 b! te€6 In rtrolr dr' to ddy rcttvttl€3.
'*pa;a:paat*
Jojo BiIrM
nBsfs I4.t
na'i
-
The rotborr stslr to {crno,led8€ lb6tr lndebtedD6ss to. ut.nael Slongco, Jettrey Bortongan, Ron.tdo Catlrdls, and noreo ld.tano tor tb€tr ".lu.ble tn prep!rlna,nd irttlnA tbe o"nuscrlpt.
forulc@4'l
Bor As.i.ti's
f'&d[sdig_
Etlra staort rrs s:erted !o lbat ev6rythtr . tll De presented tn I vsrJ pertecrty understood, bla tn r con.ra€ tenaurge. Tbls ,tll eltDtnat€ or :l:lr :"" rrtrreu te dtddent's attltude or h.blt ot oelortzrnA ttr€ concopt rttt ou! under!trndtng.
A56diai!
pErpu-g..&*tr-".(Af8t.l1Hg=ffiH .f dle ftntlPiD€3 (BDAPT thililP
is ebj@d 7dE) ltu ritorgld@' btoch ehown i Fig' P-M f t\D=Sh\Dc=6'L, lolrE loods P'1@br,tF-6@b-
resolro coolt lood inlo coopr;le .conei&r
ru'md \ lcgcnlirl
lt,p i6oo lb lcod j
sinc--L aase-+ h- +-'(16co)' t26ob' h-
Ltl@o\
= S6olhc.
,&- l6';6i ' toa-
2
8
lt
i'r"
n.et r -AA \ -Ar xz X'1.rc<1)-12,s7(q)
onounl k, posi{ion of lhe lhe Fink true6 .sh@n h R= zcb+ te+ a4o | 'aa +..n t zooa (d i@t€d dodn*o"d ) B-a39]!
- P979.!b , R'- 2.ht tsoor aal |eoo r 2oo d@"-d,t L - ]4!@,,s,ta4
"t- ?9,41fr-lL_ d = .:ryL - ?49 !1, a e|*I plola 2+o) lhe shodcd oreo in tig p-z
fo,.:a oclioq ot the center of lhe 1ox!+ in rectongle' Re mt thewe,lht of lhe mole.iol cll oway W on upwoFd lo'€e ocl,hq ol ttp @i3n of the cfule Locole lhe posi|on ol the resurtont of ihes two forces wilh 'qePeol fo fhe left edge
2az) Ihe lhr]je-'lep Pullel shown i^ fkl P-2+7 jhe to ihe s,ien couptes compuie lhe "ol'o of rciing ot lhe )he 6re p)e. A)so delonire
l4
e)
c- 3oR (4
25o.) The conlileve. lruss shown i\Fig.P-2eo cor.ies o v€rlrbal lood of 24<)c)b. Ihe lrr.:s,sle s.pponied by beorings o) A \B which exenl lhe fbrces A-,Ah,\ Bh.Ihe shown con|lule adple€ which musl hove lwo fou. forces pnevenl oppoeile momenl effecis lo movemenl oflhe lruss. Delermlne lhe nlognllude of lhe supporling foecee. rn o.der !o corelilule o couple
o
&:ZtpLb
epwod)
+ ) . + 2 . . T - p t J) P-, "ro
l1'<'
t s) p-6 o 6.tr6lcm a/f (d@ .E ]]vc(F loo aowc ,Iri-F\vorlicol ot-r@ b lhuugh ^ ptu6 o counld.ctocxw; -frrceo qD
canPv d b-f' .re .tr q'I@t€/l}
lho sr9t6
-tu?F,dfte effei Aj:@.b
,bve
lhol w.,ll rro.
downwad
a@(+) -eo
r:2JL
-
aqtt
ridri oFo
t* ) RffiX fitob- 2€ if the s'/stedr reducco io o tarl_ \,.€.d rEnzdlot foi> d 3@tb lh.oir+ pdnl A pt 6 o .*t
3-t-:
sqqlb Mn = r4o
_r: :d. l:y
lo lhe |,aft -75o
=eoo(4)
oy
:99]E
G,.,E'b
bor,w o)
"*t oo'nF€cs,o., membef, oa-r|s I P = a@b_ eil-uolea z n_ fmm lho orie
o€ €r.own ;
l6
= 4ezlelb-(ro ho rirhl)
L, - ao _ ?pllfr aane o xrz6 it =-:!@'-+!l= t t1 ot o
2.e1)A vertlbo) forcc. Pol A b onolhe. ve"ti&l FotB in Fig.P-zst pr,e4"o" o reswitonl of loo lb down ol Db o 6€Ba+occlocl.wi.ee aauple c of zo
corEisls of o cbckw€
- 2ao @5'
B'-F,
B"t 'Ft
I
i
.rsLn
p]',:.o 4{o r! rcrc. aicled r4 lo the nghi lha,+ trE o.-dn of, r*,Y oEs ol Ot.xt- Recto
R: l4 b dncoleA rcrlicatty LJpol A B do*n oi B.
i,
A tircc
F4.I'-2ss-tn
on eooen h-E of lhe rEmbef,.
sl"ens,th of moloFtot6 il iR
tz
rned lho) ibe in)ennol sleeses ore delon.ined lrom lhe equ;.alen} oriol lood \ auple inio wh;ch P moy be re.E tved. Dele.m;ne lhie equi"olenl oriol lood $ couple' I
f l i '
tl l li i
2s Rcpbce |Ae egolcm of foroee st'4n oqu;votenl forEe lh.oJqh OV, o coupte o
;;""jii#;,...':i',X"":;3'::"'e:::.:mi: zF, = |a1.a(rka') t 22+(46) - t61 (r/JB)
E?) Reptaae )he syelem of lo,r-.s ocling on ihe r.o-e in rig P-2sr by o ros"rionl ,e o) n q, o coople oc);nq ho",%"lolly
lh.r'4h B eic.
)o lhe nlght)
0r. lad'zoo, f@,os gj|: !L99' ol C =
a farce P - 1@)b. Force P ie perpe|dioolor 1o lhe Plone conDeleffi:ne )he iwisling etfecl at Pon laining poinls A,B,%c t f"lDO tD
zso) A ve"licol shoft nB i6 sfl long h boited loo r;qid sup' end 6.re ollached ol l i)s r.,,pper pori a) ils lowe. end A . is 2t1 long Al whrih bor Ec ihe end of C ie oppl; rizonlo)
lhe €hofi .^8 \
in Fiq.p_2ss by on
b) +p= 1taa1.l P: 2993 tb260.) The effecl ofo ce"loin non_concc,nreni fon:e egelem ie aofined by )he fol)owrhg data : .x - +rJorr ,
.-T'l' ,ix-ao l.r"*
-so tb (6)neons do*nwo'd) R= lMa =C
6oG) -r,ch) = r(2) f - fo tb ltu'u B \C
l8
oe shown
zy
=.F, Ly Lt - 360/90' afl
belo|9o
2or.) ln o cenlo,n oon.
L, = +ao/46o:-:4 n;ght ol on,gin
t9
li' oc252) Dc\ermine comPlele)'J lhe res"llon) ol )h€ lorces '|ing in Fg. P-e62. on lhe s]eP PuIeY €hdwn
@
zF,- +1a(t/.t4) t *to 'tnoo t za(?f,a) -2ao sinao - :89.79-Jp: zFr l.j.a (/rz) +26o(9'b) t24o caced -.o.Jcos6a'--g:93_E
2 M; - : o a s ' n ' 1 2J ' 2 2" ( / n ) e ) 3 " ' G / ' r . ) ( t - -L,r,6 n 0 (- neJ.s co"")-Cw/ - 1 . 6 7f + r ) q h \ o f O 'Ly -1oo6/1+9.9 - 0.67 ft
z,;o) Delecmino ]he recu)lonl of lhe lhree 6rces oclinq on )he dorn 6hown in F;a. P-za,rtr loo.le lls inlens@lrbn wllh llle bioeeAb. Far s6>a desiqn, thie r erseolion should oc.ourw/rh lhe didd)e lhind oflle bds@. Ooes l) ?
iil i
trl
iil
,i; I rii
iill i
l
,,/66atf;
267) Ihe Ho*; .oof l..,ss sho./h in fig P-2o7 cotrie€ lhe given loods. The wind )oo& o'e pgrpendiculor to ltte inclined m€mb€Fs. Delc"mine ilre mognil:de of lhe resu)toni, iie lnolinol.ion wllh ihe horrionlol, \ whar"e li inle-
Zr' - Rt tr , 11ot tso e/s) - o Gmea"€ lo thc lcfl ff-:lqqlg
CeTaad"
) Ztt;A = -uooa0t) + poaa(b)'bo.P( = -228.cea fl lb (- meons ccw) ZM6 = aFlrb the lcfl of E \ xb - zzeao/2zoco =--€.t]tL(from nri&le hence *ilhin lhe third of.lhe bose)
i
zoe.)The resullon) of four^6.ces, of whbh ihreo orc ahown. in FiT.P-26e, ie ai o oouple of <€o tb-ftl clockwi€e fh €er'6e. lf i*ah sqore ie rfl. onosdo, aets-mine lhe fb""lh fo.ce
26e.) Repeol Prob. 26e f lJ.€ r'gtf onl ic aeo tb di.calca d6lm to lhd ght o1 a .slope of € lo rz passing *hrough po;^l A. Al.Eo d61eFftine the x \ y rlencopLs of tho m,bdrg 6r€e F.
.:@.+eti = r e/&>(.) - r (.ftY1) L:-Ec'?,b' P(.A.'tG)rGE5.ae)O/ra>G)-a'e.ai(h)G')'aoo.at(+) !-:!tgY
Choplor
3
Equilibrnrn of Fore Syeloms
The cyhM€r C ;^ fiq P-3o2 weigh' of cyl,ido. c q of rod Ab. *a)
looolb D'aw
o fBD
("i'"F !a)
ol!& o FBDdf pullq/€ Eq D 3 of lhe bor n D €h4n rn
P-.oo. nseu-s
otl hinges fo be sm@ih g n€loot
3os) the uniform .od i^ Fi9.P-3d3 weglrc a?orb b hoe ilc a6l6 of 9ro"',1/ol O Dmw o FBD of lhe rod ' tlegleol the besfuoth thri:rnoes of lhe .od b o56u-e oll @^lool su'{^o€s to
eo€) Th€ cable q boom shdwn i^ Fig. p-tsos eupporl o tad of 6oolb. Deiern1'he lhe lcoslle Col.@ T ;n lhe cobte b, to comprEssivc ,Ale C rn the boom. r Mcthodi (usinghorizonlot\vc.ri@l ^"".) r@se'
I6'n2o't
- C.a6ast
Cst^aE' - 6ao @
eb6l. cq r to2 t.alolo I i. tcms of T) . soo 1 6h 30' + (1 es.d/coeq.)(srn4s,)
Melhod r (u6ii9 Rololed ,a'6) 3@ - nEi^6o.- H@Edho,n *,J
A
cylindo"
woighing
aootb i. hold ogo:n€+ o sl]@lh inrod AE,n f''s.P-3oe.Det. Pqfl c.-
11- 1@. 7 lb P" 212,1a2 lb Method [ (us;"g sn.E
ll.4n6o'
l
M"thodr (u.i"9 t{\Y o'*) t8 of aanido. b
.Fn-o I P . .q @.6; + il co..o' p -.roo 6 66' + 41g.6os @1 60'
/-K
rltdr e-
MathoJ )[ (u5inq Fo.c€ r.io.gb)
)d.\'1
-ih.Ot
- .oo .t rs'
Pc.6&'- llac.f P - dc63r.'//@.t'
@
dsin!"
* .oo @
P= 4@,el
(6k)-
[N...a€ (.'",{r/@.F - ,+oo- l:3!aj6glL
+ n.i"aa
;.;-
nl) If the vdlue of P i^ rb. p-e1oi6 18o lb, d.r€rmhe iho ongtc 6dtvc il musl be i\.trhed w;lh the. Gmooth plone to hojd 3oolb b6r in equilibrium. the
:;.c
P = n @*/@,e'
- 4e.6os(,o.a4/-. P?194 lU
z.' r.l6in9 sih€ l.w j q = L
B1o) ,oolb bar i6 hcld at r6i on o srpolh plo,g bt o forc,- p irclincd ot on ongle e { thc pla.'c 06 shc'$/n in Fig. P 'eto. If bv e - ?s' dcl . ltc volrc of P b lhe nomal p.s.6u€ ^t eqlcd
2a
q:d
scb@1..
P'r@!
_g-
.,flor
l
Psins'r
Fo,.e1i.ongte>
29
!ir).
Datcdinc lhe co@!ft.i
to k@P the nogniludes o' P \ F he@ssar/ p equniL'rrum 31? In sh@n in Fb For@ .r'Ia6
3oo4^@'+ P-
P6 -1t3
4'
' 2@ st^lcb'
.oo6in!o. = Fsrn€- O
245 to
F ' aa/2 a'E 6tS I Pcd
7 '.uasao'-
z'; - 2@ @s 165'
oa z* (cszo)- zo <'x'*'
F - tu,87 \b. fo{Ee €v6lar e}i^g ato s1a) Fio 3€ rcpreechts tlc -^cu.Ent p k E fo m'nj6i"t of o bridge trus€ Detcmine tho voluos of to;. e{ullib.lum of thc lorcee u6ihe Rotoled
!1..) Ihc !1..J aoolb fon@ lhc aoolb fol% q & thc r}h a@lb firrco sn6rn h Fig_p_s15 otE fo b6 held in cquilibriun b^/ o lhird fo.€o f
Are
Mettod
3e-a@@a.. I r.a;a_ @ ro .4. O @ \tn = aao coszo- +/+@6ta6d\ /. -a)
frictto^b{s ,ou 6,s ta |\e; q h t + o t ? o o t D , \a@tb. D€re':n^: jhe oaebo\rhe nordot pro.€!,! N t4t. the o7tia. de.s \ the sm@ih raatuhtot ^urttu
.d)an*'
s6,'=
i
= 15t2rs
b
qb
A
tFh=o c- w.@+',
A46o'
33
ca ec.:t fhc FinR l.us6 €holn in Fig P'322 iE 9"@o to lhe nordol ore loads gNen ler oi A t') o hmgeaI B llg Ropaotronc at B lkl: A\ ^"^o.' Detc'd,i'e trE i-'i""o plac<.)ho loodc b.}, fh€i' reculiont
32!r) TI€ l.iir66 e,v,'*n i^ Fb. p-32. ic cuplo.'ted q o hi.sa dt A b o .olfe. dl p. A lood oF 2@lb ic oppbia ol C. Dol. ttE €oofione ol A b S.
zMA- o .ona " eao(e'"eo']lat) R^.451A,Alb= a62olb,
E e.) Iwo c.tti^d.re n q, 6, wc&hjng lootb \ zootb ,€dpcclivcty, by o .igd r€d cu.vc, po.ollct {o fhc anoo.lh cr 7". ?'"-"r"d lnd.icol 'urface Eho\'^ in f tb. P-a2e Dalcrm,hc lhc onato" o< thol danned the poirtr'on of equiljbn;m. \e
P.r.stn.d
e.cd'-< P |a-f
@lir,q
lodl.4s< - aoot@e loocoga . .oo @(eo-a)
lhe rj'ore eto*a h fig. P-327 Delernhe lhe votue ol P \F
oldg
@
rcoa-<-m(-so&,.".an^\ loo .G4
$(r) aAsti - 1so(6) t ae82) f - 390,15lb
l]!s-i
t6<
- ,oo €nEo 6'rF(
- rod 26a@.
ts(P)snsz,+ - twg) -dha) p - - 1a7.6,4 tb (- @66
- ,o - 26'a3's,4.
colnptce
10 Mrl FcG
ea'l-
P@6t4
zso ra (aseai)
- t6.o
- ( 1.'.6,)(@E6a.a)
38
- a
39
&orb-l I
€s)-The .oof n I b. p * ,s [email protected] b./ o mlk, -1tu6s o ht gc al B Fnd the 6jues of lne rsc rrorrc
-a,ltu-op
ot 4 !,
.{€o(a)roo(+Xe) +R, (1o)- !0066) - o Pl= Feo lbs
. R1I R, = 3oo r rood4) r .oo RQ- s2o b'es) DelcFmlnc lhe reochbre R,\R, oT the be.n inta P-#3 looded;th o concentmled lood ol rdoolb &) o lood .oeling fnzn .e@ lo on inle4sil/ of 4oo lb pe. n
[email protected]. r@(@.6o) - atoo 60- rsoo rb (cepr!<,ir,) t'a) Oelermiie the liJr.e i. €och nerba. ol ih€ pro$ roof lruse ehoM o, E, 'Y /@ u5iae d* ^c, ze".o &=1s&bc-F6 ,Y' 4/ l* a lhc at-,s,rcto,6 .aS-ED=DF- asoo tb-..-C
at c. E aM{-o.
to,.c.
€oo(e)
,6oo(ri}rad(€)t = AY(3")
Aa- adttb
'/,
s--+
l^w Bo " i6o tb (cdnpc66'o^)
&=4q-_Aq
co = so(slo) -oh
_,q-_es_ g .ti5
:. co= 463.3i rb-.-T
DE=O
6l @
" DG
Ac - 2/r-n q) t cE cF . :,64)0- 7A (ztee.az) (F = EA . 2400 tb --- T
AS - +s@ lb ---C : FH AC:6H - 366tbr-T
b q t ,O h ' 9 6 | b .', Co '321b (la5o'r) dt C: 2?r-O AY TDA ' BC gC ' 192 tb0€'€ion)
f.d-
w-.E
6hownin a1t) comPuie lhe force in eoch rn€r'be' of lhe lru6€ a'e shlfled vecticallv do" f,A.p'+to t lhe loods o{ B\o -o.a lo oaa io lhe loods dl d b E' wil\ lh€re ba on/ cho"gp o in the.€oohbne ? Whioh membsrE' if ohY' would underyp aho.gB In hte.nol,
6rce
@ p l E ,
@ ?t. F,
'
Rw' YEcF
€hown in rig
oonsid6.i.q
DF - [email protected] 161o1b,..-a the force in eoch m€mb€. of lhe crsne
lhe i?hols fi?u.e.
02 |ca - ?occ@B b. - 6. t e. - z.G>(s)c.E126. b = l3.oab'-
- 4,o t2@r2@r eod P^w i Rry ' 1600 lb -O
p,y rp'd
@ pl. A,
1MF.O
tn | ,
A" 22,Epl
9^,Y (eo) "4oa(4o:) r 14("j,o\ t ^blao)
a bo=LAe,
+ a@(?a) ' eealt)
bD6D5o'-
@b61. lhe 6l]3 of R^v in 1Rt! - 1@o - ego - 12a la
+eo++,/b t ac t {nGe') k1e8, a"a Bc- 7o'o+ ='7@lb -
^ 3. B^,-A,Bs,a
-C B - 9 s 3 . e r{ 9 4 e l b
@ptc. tF!'o | 2oo bc'Gco 7oo \ c0 | 2oo ''
AB,^c,or, \oE of ihe 6'i6sa-e < t-O t2(to) e.x <@) '12'(.) 1ia(a) r 14O')t e(1o) I R^v - lox
/t
^?
l"'
6,/"1.
^1)
/1' <{ .// lr/r'
^--6-
oF (22- 2a)
r y@ DF(a) Df - e3s
- 42.s k?e-..-C
'lho melhod of ecclions lo compulc lhe forEe in lhc a2r) Usa desc'rbed 'n mcmbers DF,EF,\EO of lho conlilever lruss Prob.+11 q Fi9.P-/r11on Poge 92
Fv(so) - 4oo(ro) r ?ro(ro) r soo(!o)
oe. ao/3 rS cEQo). 72b
^-;t
F".@rb
7eoe4.)= z@(r,) i eoo(2a)+ a/.rsbo (ao) BD- 491,93tb --_c ZMF -o (p-@t \^S CO dIC)
rMe " o (Rd6olving OF ol D) 3/rE Dr (ao/3) - rco(ao) r 2&(^o) OF 'a6o.56 lb -'- | .MA'o L ft
ff
2aa(adr eoo(2a)- 1G coho) co - rn1a.a3tb ,-_c 42.) Use the helhc, of seclion. to detcnmtne lhe force ooting in members 0F. EF.8(E€ of the Howe irues dcgoribed in Fis. P-aas a^ page91.
A\ (i4) - a@(4) \ xro(b) r
(Resolvinq EF al E) ,Jo) | 2.to(2o\ Go) - zoo EF = 335.44 Ib - -1
Eo (2a) - @t(ao) r qno(qo)+ ca(rc) E6 = 450 lb _"- C
page a2, t\ coma22) fe. Ia ihe desor,bod pute tha fo.c-€ in me.nbe.s BD,CO, E(cE bY
i" (,o) . Eo (io 1o"3o) E6 - 16+s.4s tb --*T
.+2+) For.thc l.ves
?i-ry ]Y 'ne me r L cfllt d or
she^
ZMH.o (cccotvinq FF al E) a$(1o) ' EF 6'.b' (2o) FF - roo lb-.,c i^ FiT.p-a2a,
dd{erm,ne thc fo.€e
E ihencheckrhlsrc€u[u€;ne :f io,nt HilI. lo
sec'idq
oppr, thc _elrod
br, hsp€l,on.
Ocf,a.dnc lhc fdcc in trr.c BO,C,. \DF of lh6 nocotte .rt lrui6 €ho'6 f FtO. P- 4z
tMo:o At (16')- 1MG.) r ,ae(91 Aw ' zaOOlb *'
&-aleAa AE ' 25oorb-'-c
AC,cF =tg.o tD-"-T
c"b.)|
r.ID(6) " @(2a)t cw r t6oo tb.
fe(ta')
r/&
oE ,t 1@ - &et @ oE - 512.45 tb -"-T ot Jornl D, Zli6 -o (?.ov6g co ol9)
1/ft DE60) = 3/b ez)(co) co = s@tb-''- T
4k co . r/tasD| y'{ooE
[email protected]!5tb-..-T ,r2G) Uc6 lhc 'Ethod of ccctiorls *o aotrsrmirs +he force ir.r'nen _ b.,rc Dr, F6, 8\61.ofthe lr;ongulor flowe lrves stbw. ;. p;r. *+re llinl Fircl oobraine b/ inep.,ct,on lhc forcce in ihc rob l'Emb€.4 of the .'ight €iCe of lhe irucs . b], ;nsp@lion *cb tcnbert Jh, r, |lt, \Ho corics no lood + - lo^', rh - 26sa' €vLFo, AaC6o).2c,o62..6r.(t ') + a (@4 26 s 7) (4) - 2 (6n 2o.stX'\ - z (o)(si,n 26.e7.)+
21.o(d | 1t@Gr). +/s sF (16) gF"2@b---c
A,(zo) - [email protected],.110, zo)+(E^ %,sf) (z)(er1o) + ot (1s) tW. o : 2:4.(.a') = -.(a^ *fi.Xt) 6I - o_,rseKip3_.._r - ,(5'n?,.!"Xro) i oF(6n ,..B'XEo) +
76
Ay i 2.+6 Kipg
F6 - 2.24 N
dclern\^c
l.usc shc^tn i^ a9'P-429
0F, FH,Ft,6r, g\ ro.
e+o) For tho lrono loadad o€ shofn in fg.p-44o, &lor mirE lh6 lbrizonlal \ vorjiool compcnonts of tf,ro pi" pros. 61,.Dol B. Spoc;fy di'Eotion"s(vp o" aou,t; l6fl or right)of tho lorso os il oot6 upon member co
2l G=o, s/@ or@4)- 2$'@r) \ ,.bGo) r a@Q.') oF -- 12564
lb -
ar@\ - 24(e,) + ab(6) EV. 590 tt) :Mr .o N (.r) - 36G\ - 21bQ) Av = 360 lb
.-T
lefl of B-E
at^t.'o.
5/R rr!o)=1e(4o) r 14o60)\,!t(@) + 4+c1=4
'B00(6)
8n - t€o rb (lcn) bJ - esatb (dorn) 8r-2.gO-39O-a
+
is hin96d ot A &,c. Fidd of lho hinqo lbiE€ ol B8..)
aa5.) Thc frElne shown ln F9.p-+as iE .eupportcd byo hin96d oi E k, o rollor ot O. Computo iho f'orizonlot \vcrtiool componenisof .ll-Dhinge focce ol C os il ocis upon BD.
j 42c(1\) - Er
2ao(e)- a, G) - o O' = 360 lb
I'N1 i;pkr
BH = 4€ rb to tho righl
of lhe h'r4o 6.ccs ol Bg'c os.ihev ocl
,p."."-P.ry'
t
zN,,\-o I Bc(4) i cv(s) - cH(b), B"(z) - o BA = aoAo) +a2o(2)- (e6)(s\
tho wtPlo Gono i Av +e! -12O 'O E ' t2b'to E! = 6a lb
aPA-o. e,D(3/s)-AA-o eo 4'4)AA BO= 2oo)h --'C 8&\-a '. oo(4| rc'(a) -bD(4/5)(8)=o EC- lCOtb*--T aaa) Thc f.omc etown in Fig P- +aa is suPpo'lcd b/ohingod oI A A' o rollor ol E Compu{o +he horiz'nfol \vo'rF
*i1h rospedl to
^r1 "-' :[1o=o:cf(5)rc,€) r,tz) -o Cr. 2.4(2)- @>
lzo(4\ " Er(4). o EA ' 12Olb aVr.g.1 l4t- At-o E$ 'Aq " 12olb oi i6olatirg bor A_6 zMa-O I A!(O)'120(4) = o Av -- 60 lD.
Zt ^=oi
zMe"o (6)}.v-
24o(2)
AY-€Olb
CA(3).7oG)t@
8l
+a6) n +hr€c-hingcd oroh i6 coflPoscd ol {*o {'uscs h,nocd looelhor ol D in Fig C-+a Co^pwio lhc comPoncnts pt tio .co"llo. ol A \ thon find tho fo'coe oolins in bo's /lB\|Ac. Hinl: Frrsl r'6ololeoocb ltu€6 o6 o frcc boaT
-.._1 /c_- _ 24a trj. 24o tb a+7) Two frusgos orc jo,ned os sho*n in Fig P-+a7 to {brm o +h'!o hlrgcd or€h Campulg the horrzontol kvo'ljoolco'Dpo-onts of lhe hjngo {b.oo ol B tN. }ho.' delarmino lho }/p' e, mognlludo af forca n bors BO e'BE ,
z(.'o ,.o.b)
.n
*,e
c. cf r-'lo I o t-- -t) ---1 at!2@tb
wl = 100(6)
lofl
lrusc gr
lG
f
lR+
RaG) -.6c8 (z) R4= 3a1tb=Cv
G
+ 24o(zc) r AA Oa) - A" (4o)' o Av(a) -AH = #ao -@
l6.loting
a2
@
RzOa) = 2o.0a) i 2e&(7) 3ca@) R. - 2120lt) R3Gd - 2s.n3> + 3&(14) -4ra(4) Re= lleo tb.
83
lv'o o'd Tho bridgo sho'{n i^ Fb P'aag ocnslsts of ot ofgrovilY oonlor €oolion6, coch *oighir€ Ctn' tone 12o wo;gbihg 6, hingod ic o unifo'm A, B, E, .',\ F.
N Go) - 2ca(2o) so(2a) Av = ae tong zvl^. a e.Go) - 2cp6o) t s>(1o) w = 212 lons tc o 45o) A billboord 8C woighing {ooo lb is subjccicd Fig P_aso Ncawind o.cseuro ol 3oo lb por {l os shown rn hcmbors' doiormrno locilno lho wdrqhls of lho supporiinq E( F' 16 66-penonts of ihe hingo fo'cos ot A wnd PrcEGu'E = 3oo lbl{+ . 3oo lb/${ x lO }i
r ie(o)gr.ore' 3il1l,#;ir'1?:;"d"i''lioill l h o n e loe.Ic) lc€E thon e:(b) cq"o'
lhone- ih€ bloch wirl not siide down )',l ii,i' l. aiter ihe f'rci'onol i,i.,""j li *i,, reloin ils poeil'bn be'ou6e
IT'li"S jit. i:1" r ;ff ,:\'ilJl"Jl'*, ?,n,'; ta'c'l:ll^:'",11;i: iir fi.'iq n",i"ther'aro^ot, " j';* i"x',;-" ?iii:.: T;:iJ fiil"[,:,"';tl:: i,"' il :.T;:il#;Tf ::;::;i,z * #.2::-i,:;^, mpc^d 'f aP" tpt tr y ta \)4w'
il
;;?
,.4'"""o
5a7) Ihe eoo)b block gflown in Figore is in contocl wilh o ab' inor:ne.I\e aeffticient ol f.;cl;on is o,za C4^p"1. 11,. valuo of the tuAz.ntat fi.d-.e P ncccseonl io o) j""l s{o"{ prcvcnt molion down thc thc bloak up tha inc|ie (u)j"gl (o) Il P-aoc lb, whol ie ihe o-ounl \ dr-ecl'bn of inojine. thc J-.,ct;o^ fb.ce ? > P - COOIb 6n6o's6' ;nseq' F.n
-'l*\
1 wilt €lrll ba in o_
mation la
'" 'o""u
g'*i'tl':lji3'#;::L:1 5 *lrl,#,i.]:*':t io etort the molioA
P
=
P= ftatb
P -- +oolb
ql'a2s..s-fta4' 11 .-r N
p
. t c.) ^* e,+at4{P
'&^"
T\ b
w
^ 2+:o
P^:- - l10 1lb
88
.
5oottr
-"-^J-"il,i"'r'
*{ 4K",",J41\!\ t! A\.V
P :4oa(Los15')t f
r ' 70lt tb
Isao\l@sao'\'o
5@.) Ihe 2oolb blook shown 'ta fiq. P-soo hoe imponding rrction up tho plone cnoced bA tte tarizonlal far:e, o{ ltD-b.Pel. lhe o:nffloienl of slalio lriolian beiwcch lhe conlac4 €u.foce6 -
5Oe,) fl,e bloak, 6hown in nA. P-@s are cnnacnled bg fldib inetlendl'to cord6 possihg ovor fi1bt'bnla6s putless. Al Al]rrcnefftoienl ot frrclton ore f. - a,oo \ fk- a,2o whils ol B Canwte +ho nog.;tudout d;rcc lhos orc f.-arc\fk'o.@. i,bn of tho friallon lorca oali"g oi each btoo".. oro) Whot weighl W G ne,coe9arlJ lo 610.l tha .essJcmof hbakc ahow^ i^ fig, P-o1a novirg lo ihe F;ghl 7 lhe cocf-
89
frbr'cnfof fiichon ie o lo, \ bo fnrolionlese el
..og.
r
lhe pullege are, oesumen lo FBO or $oaf, Al
M ^ L ^ ', *''21'*' i*\"
*rl-o
!nr) trnd the leosl rolueot P rc.quir?A io cousc lhe sgs_ lcfl of blooks6how in Fig. P-sr1 to horo impendirg rraiion lo the lofl . flv h blooh . fbo of block^
{Fs.o: li:roo- Psrrq = 1oo T slnrl,rf sin7r,69' r {Fx'oi Trf-Pco6a -O 62", r(..z)(w ps:,r"\)_p6q "o !!Z99l!_ - A2Pstn\- P(aE<-o 12J.O2 p= 12z.iz K".zs'a"r+cos"<)- pt e2Ib."o -s!L. P(o.acee.s6.<) ais,,- ,,-r" 'p- 124.0lo. o . 2 a N q- a h e . o o.2 E \trnq - iorq coso<
, :f!
6 6 . 1 ^ 6mArd =,nrf
l^' 6otb =fg -O: ll. ' JoO co6 ro' HB' O'1,6.+Jb
o5Y" fFD of ElazY,CI
l*l
--T--
arz.) A hoingcncous -blook .w,. irvgr,r vof r wejghl w t Y rresi EDr u upon Pn rlhc l ) c Iinnor'ne l9tlown in Fig.P-.et2. If tho aeffioicnl of lriclion ic o3o, delerrm o lhc gleic€l p!' aletel h.,iah+ hA ol ^l *,hi-r ^ for€o c.haight whioh o porollel fo tha incline "at "pl;.a 60 {hol fhc bl6'ck wirls_ tu6 uP tho ;odt;d w/o;t lpp;,4 ove.
p=ttl=F Z F ! - t t : t 1 6 h t aI F 6 n b ' - P ' 1 o o o..113)=1oo N(stn6a'I o sln.tBd ' ' 1@Z 173'22 tb i w\r
P -l,l =(o.s11i07a'22) = loo tb s15.)BlocKA ir\ Fig.P-s1swoig'r€ 12olb' blad< B weighs 2<{jlb' cord ic po.ollel lo ihe ino|i e lf lhe coeffcic''l \tho of fri"tion lor oll eorfooee in co-tooi ie o'25, dcleirlne+he dVle 6 of the rnol,ne ai whroh molion ol' F rinpende
R.'32311lb. 1F\-a, P. B2s;nao.a6 t fu 6tnaae6P - 1 2 6 . 6t b . s1s) JF lt1 Psto, l4o bjoo\s ore .b^^ei@ bs a sot.:d slNI oi#oc.]ed to eoch bto.t, w,ln pjo6., lrrcl;onte€s
[t lt- aeffrc enr of t^,cr,b. u@e. eo.h oto..< i-L.zo \ € we6hs 2rotb\ Fhd ihe min weight d A +o preverrf Irotiort . 12A
;^r.*'
.
R,1 -"'^(a,'4>
R1- 1237 sin (4o - e) p1 - t u,1 (sin ga'cose-- cossa'€n e-) Fl - 123.4coso-
92
93
lL.A26
:.O - la,O+'
c . 2 sn$,95'
7 0 s.z+-o+'
c - 201,9 lb\/r'
a
aOlA
w^ . s98.3lrt
of friot;c,^ ut\aer A to p'ucni w-.e
t'42
rnolion-
e-113'
tF,.o:
.ln4.r' C . 2 J 7 .S + l b
r
/ - Er " 2 0 6 a 6- o- . i e /
l rr
o|ocr,on,.rr
ihe bdl,e 6u-foe
szr) r" fis e-s,o \f J.a 1 urde. both bloois \^ wo6he aoo b.rhd he. nor' *eishf of F thdl cnn te 6lo.leA oP lho irottie b9 appl)nq Io A a e's6l wo.c r'cnzoalol tcr<:z P y'.!-.o.a
at b: t-a.t-. FBO
z4-o : tl - +o3 I c6in3o' zJr-O: ,Ko. Ca€e6' I F stc -caeao't @,2o)(+,xt+cs'"zo') rb-.(1oj6)-C-374oztb.
, e ^ t t . . a , t @ . o r 6 h & - . n F : g u - w .t h e a.e 1 ot t.ato.^ ba lhe tu6i9V lh..ad E o.iq CD^p.te o:r^ A oi *y' {.,eh, ^ @^ be pto.@ ta ptll"a\l :: :, 6|pPn9 cb'v. thc rcd ,)er,ar 1rF derqnl
95
\ ? a - 1A l' 8D
2M^'O
w(L-1)t r,@) - tib)- o. al$Fl t o.2(z)M-2Y - o o , 4 -Lo A r o A - 2 - a
Afr-o) N1'Nz
mo,e€on ..st. or L. y,1trJs,o,.a. u.*
Y^*:' f,-yt,ir
^ o t6) tb n a1 o l s t p p . o q 'l h' :e" :a"r-' e
.,.mb b-fd_e lE I , fGt ', .o^ -- d - ,, o - ", .
;,?""ll":,.'.::""'
L--L
n',t 1-o,zN=o,/tt.
.,, e oI j t o r c + . , g n e e b i j ,6,q .toda6 at grc,t.t! lfF rDrof^e bdda .. p.o.4J oga.re. .frtn a "erti
L-ein
,
w-- Flt F.- o.2\ (a) W= O,4 l
@{. di 1b * u.Io.7s"x
. -r, : aJ ,,^,
, i,"-,"trl.)*; \"lz A\Z
Lon
v "?
[^"'"
.o^ '(^..o)
Tanzs'\ '1t.tz . -Ion1r, r tolon.re (to'z''
tl
' 1o" to'', ' ,o
.ng-ec.€ad).$a(x-s) x -sft. szs.) A uotlorn lodde. 16ft lotq V, weigaioq wlb i6 Ploc€d V one ed on fhe grcund \ the otne" hond ogo,hst o ve.trcol woll Thc orgte f footbn ol otl cnoloal s"nfoces is 20'. fthd lho mrnimum volue of lhe onglee ol wk lhe 1oC.
160x - e40 + ^ _ 5.2s 11. 52r) A. hon"gncaaG celincrer rfj. in
''*'a,, n i,.q"" i;; ,";,"_ d o";i::'";J.^l"lf* or f' n'oi G w"
to. on co. t..t I eb,,o.ps cad.l
! .!',.?et6" noq^l )de ol the cowp,e pllo ' rat e1u'red dq rctolrs """.k-;";;.""
"lr=4,t**t".,'S \ to td tvnro'
O g.rilrb
wqr'3@lb I
ot cg:Jilibnun
qr '.\lJ
lr\R\"
Jl___,.,
4!l\"
.ffir:= 4,t\>r4;rr
I
(!-L6tne)" - to. n'(a-L@ea) Ia^id r - Letno"lon2o', + ton2o't @a" r,(to to't lo^,a) "1."{; L@se+ Lst^e
27on 20' L@6o I zLqtne - L6.t (ron7a'ttoh2a') lLst
e'L6the(ran ld t ron2o -
-srr9 =2,39i2
a.Ion zA-L
O
+-:Po:
Ton2r'!od
'L.o.r+
{Ma'B
o ",r. (1c)r r,t.s) .
B l 2 o , a ) ( 1 , s( e) to f t ) ( 1 . s )
9t"
:,x^:-T:::?, cuti^der;c^*z counte.ciockwise-
t L6nt+
r-"o'-
the citi'
d, o6is..
D, @67s,
t1,"i'c^s::".
n7 .r,'co376"
-,,J t""rc.) ",,o n1=2os,7e b
... n.,tz6stb
. E,at.
_ 0 : : f U 6A n sr'.) l-s1tuo
,-
l*,1
\n
@ (!,d__h(1-a)
Io sio'l
..t,.ph.
=(to'6)(%s76) = r"tis.Gt,ts) n'77,41b. f?= zo,s tb. dFl-_d,n- lhe m,n,mud h c , r r z c n l oI
gto of f.ioltb^ ie E u.dd coch btook, nid p di'l>+ea rs.ol to lhc as' i.ottio thct w)| ooueo impendlnq tution lolto |.ll. iEdoti^g ba. tho O
e.1{
../'.o.26a l
l
.r__J1
-s<;.
_9_ c q'Ion6c7 U-o)- r6ad ('.lo) J- la.r€'7 (t-o\'-'^.d(^4) ' -Idn,f.a t ton.(it, lo^bs'7 = -1a6L')1i1ctan1d i",s\ ,Dtaooo' r (ro" oe-rton+o)- to lan ro' r.(tonzo' tlo"rc|) 'l= 2,81
< M . - o , p ( 2 , 6 1 - !-)o 2 4 14 ' O
3 . 2 +- 1 o r x ' o 83418|= 0-76tL LdngihzL i€ totol "tl ,;6.pr""K of wctsht W \ ploc.d 06 !;ra'a ia fig P szt wilh ll ends ia oonlacl w/ ii;"a'i,a do."a .Ttu orgto of f",cl'bn \c ts'. Oe|ctsioe
98
:n. tao6;n*'t rocqn+' zn.o, r" +a-;zs<)o-o-*+s. p n. 2e2,8+ tb. (o26s)(.rr.ei t o - p
rii,l
,,y'a.,
p:Zq€A bo. .^8, wa:tsh:,as a;b 1i€ ro6tq..abe .1
lrlcr'rnlfs6 p:n- lo o aloc, *e,gr,,aq zoott as 6ha*^ h lhe . ,/a-t @ wat , I a.26a Fhte u oet t1e atocr . r.a.?o Dete.n;no tho fo...o p necica b s,rc{ nlolb,1 +a tho r;ghl.
99
a h ' O I R r c o s a s '- F , c o 6 7 s ' 0n.a2) cc &' = R. - 3e,6a tb
t " r-l!_f,__ i Z F g ' a t 1 1- 2 o o I A r d. jo1.6 tb .O: P=AAIF
'
1M^'o a24(b@'6) r r. ra+E'dB a"s-L'a
P- 2a64| bz)(1o1.6)
-o tt.\@.+s' | (o.t6t)tt6\.b4t6'-d'\s'na6 ftg.q = O,s1gflo Na-2894lb ' " Brt Aa 116 26e'4 ' (o %6)(2Bs'4) Fa /^t15
.'.F!"o : Ar - +2+tra - so| 6 h WED6ES 53s ) A *.dge
$,.) ln riqlro ,dcle"nine the votue of p Jusi .s,fficienl ro €ilorl the 1o'wedge u.de. lne 4oo-lb btoch. Ihe ongte of fr'otio^ ;s 20' fat otl aanlo;ctsufiac?,a
r*s -
, t€ bger'r ta .Pt t tog.
81.".!19.4b,
1. a rt e )
Iho angte ol frialla nor ' ongl'< ollho
lion br}t'ean lhc \ldgL\lhdlaq,dd
!::!rJ!=
s38) ln Frg.sst. aelo"mino the yotue ol p oct;ng b te 2Rq.| - 'ra1-P'**'
,
aF'-o
'
tetl rc4u;.ed to pult Iha \eadgo oul fmn urae. tE 4<>otb
61tt)'P
'i'"'*P]"e
aP - ,Rtd.|ttu"4&) ! (@Y.Y+).al!a cos Y.&EQ 'st^P st'"{' cas.t/2 - et.d st "t/2 coeq
Ia'/ - &1"1/' s.6) h fiqur-, delonninc lhe nrnimum wa'ghl of 9loch B lhol gloohA uP lho )'clino $ttt heeptl ol 1.,61o forco F 510116 eurfaco ol F lltc weighl al A te loalb \ lhc ongld of fttclion lbr oll surfoces in oonlooJ is ts F B oo f n
iF'
LJ--l I
l$t 100
,*F{'
L?
--EL- ' 3L
'-f={-
_L'
-P91:L
-
p - zoej
Ib.
$s.) lf the wedse de€aribcd in llusteofton hod o wdghi of +tttb,whot votua ol p wautd b. re+ui.ed (a) I; stort lhe we/tgo uncle- ihc bjock,\(b) la pu lhe \|edge au1 f.r,m ctn
l0l
*"':+n"" #/ I 'i--)<---l vtnr.
dngiE of fnbnb^
' 19
-&- -_:99-
$a L./1 V o, - +aa -;"1or -;*'
wb
Re- 1og.g1lb 1Fa-o P Oos,b1)c.e't lE.4.ni p. - 91,Etb
nW' R 1' 6 4 1 . 1 t 0 .
!fr,. 'p-
= ql's' 2t.2 P^ - ft,t Ib
s+i Detornirc tho forco p rcquircd lo €'to.t thc, wcagd dron in rhurc P-eat . fhe @"4a of lni4rbn lor o svrtocos n ca,lool ie P'.
A*
fOD of b
P - + 1 6 . 7t b tr\- a : ?nsi..' tW @ts' - o
R, - :&_e:::
F.@6'
afr.ot R..os r') -w
(-€inrs.
_L btoars warllri€ z@tb\Esls+o) ,4s 6hown in Fig p-'io,l-o qfoae bo P!€tve orrjl b4 a tc' oft lo i9 cr. a ton:anlol ic 1s' fo' dll ,@ioot cuFloco6 w.age' lhe ongk' ot l"ial'b" p ic rwqoirea td €to.f mov€hal o{- thc blo'k6? wroi nr"o ol t1o* woqld thie ohswr be cr'd€cd il ihe wor'ght ol oe ol fho
s..) whol lorco p nuel be rypiea to thc wcages snom rigt o P- s+2 to 6lel ttE,n utu a- +t1o t',och ? lho ot.Eltc f.,,itoi for olt @^l
ar/1y
. 6't A. R, . 2aa 6€ a'4 .aol;/
Rt"t"ztv
aFa.a ! zPn'sn'' 'P P. ..(n e)6,^3o'
3,:::3 e
to2
/
- 11,5s.1 p-g1a.+lb
lo ts@tb ?
V
eooo
R" (costs' .
Rr(ce"'cnc'io"rc) - +oo & (o e7a)'+ao R l ' 4 1 1 . l1D .
;a.eaecd
' -R.6nni ,
I R46D,€'' +oo
a,ryc - 8rslrl/..
htcrc*< |\erc
1 6 ' .@
&. A.coslo'-s.rb
P
-
ed,q
_f_ '_le.u-tb
103
sa3\ To adju6l tha wtbol podlion of o posllbn ot o c'rlvn^ €upportilg a 2boa lb laad . lwo s' *adgc6 oro u6cd os ef'own h figuro p-gaa . Octo.mine thc n)rco p ncc66cory lo clort thc wadqos if llE anglr, of fiichbn oi ol! surfoaee is 2a'. Ncale.l lhe (r,ol@ ot lhc FolJc.s
G':,o'*'" - -..'"*\ (et
,r'@s1
,
1 +
st
tu'@-@b'6'aq
-6'n2o'@6q
j
a,ee-e.q)
(sDo.-G-&J
o4"
6,n<
. (*-".,
*"
Grn2o'-€ra2o'
_
*) ", "_ - o+66r
= a.446a c< 2s"
Io^4 gS!^RE
P opp)teAol Ihecra ol a Ie.6 zfl. to^g which witl €+o.t I'rling o *ebht of zbns (b) whot wtue or p wt| yc-p tE
s+.) In itlue. P,oa $+ lf tha atgto of fniJto^ G b' ol illrel@+e o1t sa.fbces i^ @ Iac+ dolarnae tho mo,imum wclgc d.glc. \
lnor will grve
lhe ^edqe
o
ne.^ant.al
56]'EW
sas) A s;Bte lhrcodcd jootca@q hoc o piloh oF o,s t^ a meon rcdius 1.a,5 ar n. Iho creft oiaj \ of elaj( trtctbr of 0.1s,\of Alhetic f.iot,o^ ol o.1o (a) Deternine tE torcz
R - 23aS.4lb
fBDol B i, ..N
THRE-^OEO
od"anlo7e,
ft"a.1e
P' 0"4)(,,') u" (.,t t ".2)
p,.6s lho" lh- wcrqsl w or Inc tlo-|.-.
:.e,6",<
l'as" P"+:Lro.(ote) n' Ge@hn\ b" (.ata.*')
t
j ' sj +JbE 6a5.) tho d,Aonao bot||$ oalo61 lh.cdds o^ o ,.iple_ lhrcoac4 oou"** ie 2/.3in Tte, h€o^ Mdius i" zin, lte coemotcr,l ar ff,ot,oa o.ro wtot toad con be roised b9 eae.lirg a nonvl ol zaoo tb- ft ?
- 1a&. n1.a'
l'l*
pilo6.
€rbltllleP,
taaa_
-l srPorq)
6nO,-)
(s1ntu';.(6'n .''44
- f_1t
'--
P
en@'T ::) "
qa+,s
;;G;;'4
,,6-
paa
€"1&r<)
-@1;6'"^) hab - @s'o.6'n<)
-
2/.;^ .. Pilc\ = 2;^
I baa
l"
(6,^@ il j6 lnpl.
10^6. ?;Gi . o lee lr - g,a3' zFr
lfl '214.
r-wr 10^(4le) *
ihedcd
f r " l i i p r 9 r i c _ p + . hb
f -aft -
- a66itl
2oootb-tt- w(o.ft67rt) ton(srfie.ot
2ooo tb - Fl . w (o.o1E6e6u ^)
r04
to^f . oaa f ' "'tt'
105
vb
o"s;.:r c t"a ic G6o' e4 - .'eo'
- 1, . 2 ut . 1"o;"-,{*"k)
:-.;tu t"
tb f, - 'o 1"' 1+>- 11s7 ... ri "-j1eLb.
bll l.w
36t ) n ropc "."tppd twiac o.ouit a po€i {ill 6uoDonl a w;'?hl af aooo tb wh€.\ o tz.c€, o/-,so tb ;6 s*led ol ,hc o_ Pilor. . o.zEi^ (;,
@ d1lbto
nEadd
@tliPrSbs 2) "-19j14: - o.os31 lo^e 4('.s'lr) € ' lanr (o ossr) ' o oez'
I - r,t. ta^(0 ra)
- 14U rgF\jf^) ro^l b.sz', " . a - ' ) " T 102,3lb-fi srn) A 6i^gt? ltuc-ded 6gua@ s.Ef t'x. zvzflraae / i'+'ie ein . The lt-.odI atanolc,- is a,6;^ \ tte ootElda d'2rt* ',c cdff'ot^l { f"iol,i'n o.ra. Detcmi^e tho rp:r6l r*,<:zset'rg io €to.t lill;ng o \"t-li.ral otl'al lod ol
r E- w . r n ( d ' e )
.
B€LT
'f,E)
I-""'
nq/".ti-z.e')
!h.. o d. tulu:f,;e tte aetr,otc l cf ftroljon. ongEof co^l&) : /2o. t.rorb
,"+-Jt-L^€?.t(,*.,tr")
r\_-4)
L^ so - | (lr.s)
laat,tb
I ' Jt-!! t2..7
'=> Ylo e's
%,) A boot .,ert6 o pu| ol +oootb on tls hoween Vo is wtupPc.J obaul o copelen oa rhc dock n thc I.o.3o,ilo.^ no.9 lu.116 mu6l lh6 haa,sa- rckc [email protected] rha o;taa @l|Dl lfp pull ol lhc olh€. doos ncl arccal srto_
Ln-\-- tp
L":,4a - !t4e'_. oaa t | 1yk = e31j' .11,6t g^a.)
tnL.
P
A
loftlue
of zao b,fl
+
t+,ot -a.
6z7.f ia6d
oci6 o^ lhc
= _?:EJe!r--.
btukcdtuh
€hcM
rn ri
P-s53. Jf lh? brcN. bond h in c.nta.i *ilh lhe b_Ed.._ lhrcvg^ 2sc' \ ihe coemc,al of lnctron ,s oeo Detah.,ne lrE hfta P ol tho e.d or the bmN€ tcv-. f1 - -14')L@'\ tu) L
JL. e.,az .. r, , T r 3|a
l
FRIATIOII
,/\ repo tuttg I v+ turc orcu.d o 6rolio^o.j ho^rnloi dF.h i6 ue.a to s"rlt-l o t
t(Xi
( r-r2l(rar-fR) Tr..L
.q,6otb
ft (o tcoo) . aa
ru
. 2+o tbfl
-
rt ,4ee.2ab
il
plre^- c*) . r, l?,:^ '+) p(1.333fl)
. +qa.a3 (o.l/,61)
ZMp'o
(9T, r rz(z) @n" Pttt -5 f 2 , - 2 1 3 - 3 1 1' o ,s (!/,t 2 (a a41)w
P'617tb ss+) Jn F,a p -sE+ , lE
acetficjtql
G o,2o b.-+qae^
of fnot;^
rdp? b tho fh€d drum I bo&<-n oll ed.tooea i^ conlool. oa.lc^. m'ne the minihuh t€,ghl w fo pl€lal da,v^ptdne rcirin of the -J,-
- t,at
o..(r4u*)
''
,
a(2.ro)-o
6e 1tw - 6& w= 7047\b
ft'1A7Iz d1 'wo636,57'
Iz -tu " w€i^36..)' 12 - (a,.) (q @ 36,6, - w a^a6.?1' 12 - o 16\tl
T'
4F3-a | \2- 1o3o.@e6,6J.t i1
rl2 ' sod I rir .€rx=o 1 Ir r Fli f" ' Pao 6i^ r6ar' \ | 1t:ti t1t t1- 6aa H . . B o o t t 1 \;
= 3oO 1.+2W I ot6vl t a, | 6w' 4oo - 16?t
v,t.z92.qL s's.) J^ F,s. sss , o fler'ibB bctf .un6 fdm A d€^ rhe 6pe^d purlca E q booK o@ P ta o 2&-h wc,€}'t $o avff|o;6t of $tolrcd )e ,ti bciweo lho bslf \ the @apound pu$% p rhd T onoxrhurn weight w lho/ oo be eopr.fted vaal mloling
tho putle4 P or etipping lhe belt on to
p"|eg
i !z= ut-"'"11-"t'n,'."
h.
12
1"
butI'.V2 I1 - 1.6+e(Y'/z) l l
108
109
€o2l Dclcminc thc mogniludo of lhc rtsrltonl, ilc point;ng, q ils dir€clion c.sincs lbr ltro following.sFtdn of n6n -ooplono.. cdcu.rcnl forros. 3oo lb ( e, -a, 6 ) ; {o lb (-?. +,-6) i @ tb(-a,5 -3t, FORCE
(D)
4
logcl
Di6to@(o)
le
-a1.4-_4!--3 a
o!r"yrr!'
o
- ?n/3 lta/r.rI ... A. - 1ls.?4 lb. 3.4/7.e1- Al4 .'- A' - -1:.2.55tb. zao/ral 24.17 b. d6 .' . /e. gL-,L-L" -LlAA
k€aE p, e, \ F ho€ o Esu[,onl of j tb. dirc-lcd fotuord \ up to.ighl ol e, =oo',O,= 56',3", - 1r5".p.q@lc zo lb\po6s< through fhe ongin \{he poi.f (?,1,a).Tho \olue cf Q is otso uo,b \ il FDsse€ th.oueh ihe p6i^l G,2,2). Ddiomlne lhe nog.itude of lhc lhi.d force F \ the ongtes;l noke-s wi{h the reference oxes. 6at ) ftr@ oonc"@ai
6c.0) A foftp ol 2@lb. 16 dirccled f.pm E toword C h the cubc sho{n in Fig.p-5o7. Doterminc ihe rnomenl of ll",c force obout eooh of tho coa.driold o)las. rMr - F!O) - 1,+8.6 lb-fl. = - L8,6<4) llh--394.1lD-n.
auz.-tu(r)rr'G')
t -L"EL- @-
- 7-+,3(i) | n1,4(4) 4M.- s1o.Slh-{\.
ri - {1 i tb.:,Fz- 140.Ftb. cos) A for@ of:"oio ieai.ectea Fb- B loenc D in ihe cubo 6hown in FIi]. P-6o7. Dele.r,he tfte Frornenl of thc J?rrreobout drLh ol the a..di^olc o'es.
611) A h@ P,dircakn ftr6 F ta*otn I in lhe cube sho^n in Fig.p607, cov.es o momenl My - i6oolb-ft. D e l c m ; . e P q r l s m o o e n l obout lhc x hz orc€. -!L - !L.3 2
Mz. -32oo lb-fi. f.om o poinl n (a,1ia.) io€.d o poin{ S
(-3,a,-r). lf il ccusesa rlomen{ Mz- 1cootb-ft, Determine the monl of P obool the tt &,y oxes. - -z.to(+) atAr -9@ tb-lI.
-E-'LL'-L=4 .'. F, -o lrt- rgol6lFe-2ao16.
zMr- tu (4) - r€o(a)
d . 0.11fl. -La
q,1
4M2 - 72Ob- fl-
Z-
!L-
lL
... p, - 7p/s,n j Pl . 3p/s.11i pz =sp//eAr
tMr-
ztA,-p"(\)+WG) teoo' 7/sr\(p,+'&)pA,r
244 tb- ll
P . 9'll lb.
rl4
ll6
M
iliii ll
d
fi {
I
I
pt - 7elb i ry - aootbt p2- s@to zM,- -PzG) P' (1)
65) Thc frona$orh shown in Fl9.p-61e con€ists of thr€€ b6.€ Ab, Ac,q Ao whose tower ends o.€ in the some ho.ir6._ tol plone. horiz.tr,tot fo.@ of 1@ lb oclinq pono et id lhc x oxi6 i6 opplied ol A. Delcmine the forc6 in eoch nedbc.
= -g.tO) ' 7..)(1) r1't - '17oo tb'(l
- PaG),p,(1) - s@(4- 7.b(+) - -8oo lb-{I. }'4/
zttf
d;
6i+) Ths sheoFleg derrich shoxn in Figp-61a suppodso \ic.tical lood of zooolb.opelied olA. Poin{e B,c,\Doc in lhesa'ne norili r.ntol plone A,0,\ D orc in lhe )(Y plone. Delermine {he in cdch menbe. of lhe dcrick.
a-1r:of +
'(o-o)" ' (5o)'* (o c'5)Y Go,,ro) da d^b - lS.7oo fl . drc" . @' o\" r ks- o)' r (o' o)' d^c'20616ll.
di - Eto<-zal'*s-o)'.
'Gr)'.(6af ,@o).
oN. s.a67'
lcolole Right Sidc vi€w, lsolot6 F.onl Vicw,
; lsololing Top view-1@(D, rcf(3) ,o cr.62Slb.
.r{oa. r. o : B/G)-1db(5),o as-, !L. c/ 't @(.t/$
AE.lll€
Ba- l2t'ooAo)Y$
aw..r- o: '!r$(1a)-ot en) - a a/,= laoo )b . L. !L' !!-"!r a Dr . 2cballl ; D.-o
e"9L'L'92. AC.1!?4,s
_4_
e- - AL
@(z)
Df-alEtb.
-6IL - __9u_
Ac.76s.olb.
Ao - s22.91tb.
tb. i gry.5ootb.
616) Refer.ing lo Fig.p'61s.r-Jpta.nhly-looo tb jarca ta v€i,licol down*ord locd ol ea@tb. Defemine +he lorce n eoch .tE1i1*r rnda. {bis rc/isod lood,ng.
tb
d^a.,@Gioi4o4Y
-&"
d& -r'G;F ,G;f t Ga\61ArY da " e36r ll.
ll6
-o,(oJ -o
tt7
leololo Righl Sid€ vi&,
610)'the un6./nmel.icol contilcwe. fftrrewo.h sho.q in Fig.p-610. suppork d we ical lo(t of 17@tbol A. pdnl€ C rt- 0 oE in lhe bodo .dlicol plone whil6 g i6 3 fl. in lron{ of thi6 ptoi€.
fi€ nnce in eoch @mb€..
a^s.t@-ifi6:F-,|77litr' d^c - l6al;Gzf-aB-Or
(2a&-tuaoxs)-c,G) .a qk) - 2a.oe)'a
d^o.
DrG) - (2ab1o.,aY.3>. o
. 6.vt!. - 12'
"/(s'a)'I (+<)' ' (o' e))' ' e,16r'
-4C-" ,9'-4L,_9L
AO -
D.
AB- 1r1O lb-."c A O" s 2 2 , 9 l b 612) The poinle B,C,ir,,D of lhe oonliteven frolnsv?orx shown in Fig. P-617 ore olloohed lo o v6.tical wolt The aoolb toad id F|oro llel io the z oxi6r\ lhe r2oorb tood € veriicor. Compute lfe lorce d4 "446.)2 | (b o). t(4:a +)t2 - 101t o^. .,t(1o or |
Isololo F.ont Vie*,
,; t:rz
,l; c,C1o)oeG)-@(a).o
lelole
1,@(e)-B\(O -e/6) "o s | (1o)t 6/@). 12..b - " -A i6 . g, - br .gt 5 Are
Ftunl view,
'-t\
1W- a .d*
ot/.6) - M(4)
- +o.(1o\ ' o
_6q -,qeq A g ; 1 6 1 5 , 5r b- . _ c to.o (4)- Lo(.o) - c, (a) . a -lL-
-jL.
_4aaq
AO = 2382 tt)- -I
--lr-- . sao AC- 53A.3
l.l8
;. bf ' 6/68t
- 5,b.,lo
I
e,(d) | 6/sB,G).13(a bt'Qa,tb,'.Br.12.alb ... nB "r7s5 tb,.-C \
A C - 1 2 6 0 h -- f fteG)
s.16s
-
- 34d(.) - 0, (1o) "o
T
A O ' 1 9 a , 3t b - - 1
aB) €de P"d. ate tl lhe 11.,tb load i. Fig 61A oak hodzon. oulwo.d froi n ,n ihe drrealicn lrom E leoid A. Ftun Piot.'F.619 d,^a - a.i|s l+., d& = 12{1. d^o - qfts fi
It9
lsololc Frb.'l Viow,
leolate
Top view,
zrA.ro. -o,(te,) + Rf l4).-o W - 6.6./aot - -@ zMa- o, 2o@(1)- CrG\ -D' 6za) at(4)|q02.41.
- o.(1d)-a/i es.G) +1@@)' o U(to) " -5.,/c)14o(3) | E@
g-5@tb. iq-@tb: /\e- 8-/r,3 tb---I i B, -aaolb.
.D= 4166
O" r21otb gL :. AO -,1,{€6.+\,. 0
i....'a)
,..
AA
i Ao-6.1c'6lb-C AA -ros5,3lb- -o I [email protected] in 62t) n ve.licol boa p = @tb oppl'pd lo th€ lripod showi codlp.esgrle fiq-Q-621 @u6f,s a lorcc o[ 2i5 lb in leg AB \ o cornpree.i'/e fofte ol 2@ lb le4 l\C . Deleernine lhe force h leg AD \ lhe ooordiiales ro \eo of ils l6de. cnd D.
d,6 = ]|e,OO6'
d^L- 6ofr (o--eiGi.F
.((-t-1))'t!o4)" r
d,'' - (6a-o\2 +ka-o\' t (o-(sr' d^o. r+,i+ ft.
r20
=o, Df(') - Cf (1) . O
Cr = 56.-2l'1b in@, o' = ,15 G6..25) - 1$ k) = 9eo.7,t4tb. |'rO, q"8,G6hGE) , _95O.r13 ., Ac - W.2S t _Lp_- _jEL ^o 1o &fio1 10 lara
aro) Thc fmnc*#tr sho{n in Fis.p-62o suPpo.'ie o €.li@l 2ooo lb. Pdnls &c,\0 oe in thc sdE ho.;zonlol plcne l.Dd of Delcrmine lhe fo.€a in ea6h nEmbec. d;-
-o -@.
Dr ' +/3 cr - -@ .vb.. +o@ in @, cr<+)t 4. c./(12.c6)'oc.o Ct O+.Pe\ ' ada
o -.co),g,,6;r &(r) -.,o{n)=,
9' 6.,) | B"t@')'Iloo?) - o I'Go)+RrG)'6w--A /\B.Ar-8..Si f f i E s . +
l$s
a c < t >-
t2l
lsolole Righl side v,ew,
lsololo Fronl View,
-i' M c . Oo -0r(6-2.),@oG)-W41) -o 'aoo(6'zo')| as@- 21e6.6 -o
0 = s81.5 tb -C 68.) 9elcr'l'ine the nroxrmum sofe verlicol lood w fhot can be suppo.t€d by the t.!'pod 6ha'n h fiq.p-G23 Arlhoul ett:e*d _ lng o cdmp.essive l6rJ 6 2arblb in dny member. w
62c) the Flole 4arn in fb.p'626 aoti$ o load c,f loootb aoptiei oJ E L) 16 supporleo i^ o ha.tz.nta. po6'r;on b/ th.c. *l,".ic"bl". ofloct€d dr A.B \C. Gopule lhe tef,,e,on:^o..h a.]bte
,&-(1i21.s246)- srds.etb t tl DC'2e t
,
#'+'T-+
2 1 O o- C t
B'. Ees.a tb i gt.11gc.16|At. $q...tb. o+ the nbhl 6h6 vi*, zw-o, Ay(1)- s, &) -o Ar ) t/a (17a6.rc).2232-1 tb dv:k 'f M> 24oa
_w. -22122 DA - 27s+.s tb oo totl .x4t tti6 \atle bd@E il er@&s za
-Ci
^C2
ct ' 1q6,9 \b. C.'O
6l-r.L-!
_-.]
W.-4,4.,0o(+)rcio).o C' 4oo tbT
-6G)r 1.,60{6) - B(s) = o
s'-3p@\i@@
A t A I C - 1 a t A" A - 4oo 4oo A - 1<>
627.)6oleeprob.6 if,t^ add,l,on1oihe loootb,the plo{e w€,bhsj
LVz'o O - Q(a) | G (+). o 02(.).0,(6) o'/+ ut: O! t,cr-G (D'/,')Gt- o'l.o) c,G)tc.
o, ts ;i:::=-" ,i.'"/
nn6g,otal , .m 6) - c6o). o
ebG)1.&o G) - @ta) - aLs) -o
.V" ""{2.
c' " s.2so, -@
qbs.@ b@ ,x r s 2e D' 'eoo 0' . Solb F.N@ | Ct . t.Lt. 12o tb
g- g.o tb .T
c . g @ l b ,- f
ztr.a -
,to.fu(c.rcsl/a
-A+ [email protected]'g&'a@ 'o A' 600 lb"l 62c., Refe. lo unsynrnetrrcol conlileve.
Ac.kao0z):L/1 lc - 126blb.
Go'r€wo'h
dosc'ib€d
in pnb.61g on poqp €6 q rep€oled heneosFl9.p_62c.lf lhew: ibal\lood of 17oolbi6 shrfle, b ool o1 lhe midpo"l ofmem-
ber A9, oomptrl" the componen{sof lhe ceoclion ot I E lhe lb* oes in lhe bors tC \ nD. dn -.[.e-af,O+ef '6aY ' s,7" X a"c- .@$i6 -ofi@-of ' tzfi a^p- t6of 'Gaf ,GEiff - sftaq. I
^ c - c _ . . c r. e r a./' A c''cr/2 | C, "Ca
AD . O' --9t e,.6s g
'02
Relcninglo FrD.t view, zMo"o 0" b G)| s.e) - e(.o) . o ax(6)| azG). +r.. - -@ z M c "a 9
6ao,) Ihe b.f,,n BE of ltle sf,fl". l% de;|cl(. €hawn i^ Fig p,6so k tuloj€d bNo.d jr' meogurcd in o honzaolot ptone lhe nrasl nb i. vc.llcrl ( ls s"pporled ino g>or3.t aI A The poinfs A, C, \ 0 orc in lhc sorle ho.iz..,lot plone. oelemine lire li.ces
in the lEc Ec \BD
l
ii O, s@(.o) | 6, (!) - e3so br = lasa tb.
l :
t\ lhe.conponenlsof the beoring reootion c*
Q c, = otlz 1 az'D./+ sub.@q@ lo @ (o,h 'Gh)j '(.^*o')la +a2so 6,50,+gsc^'+2eO D "r c ' . e d o - . - @
9,6d+6/(')-ne(6-2') . a s,(a)l qb)'$3o--@
dao'dsc.tr2tg I
@t , ct)e)- @, to,)(.b)| noo(z9) . o (0, . c') (i) - (., I o,)Go) { a26o - o - -19
q(6)twG) - s.,Oaa) - o A(s) rt G) ' 4aaa b q, v/'ae --@
q 1o1's66
n e4.4.
oy = t63 [) - . -A o
-A,(.t r (c'* o'X.t r soo(s66)<1tt X')'o -o - @ ^" 6r , (Gr D")Gs) A,tst =(,r,7 i t1)t14 A" = 2ag7 tb oz . 6114/s_- 61 tt) Cz . 227a(s)/i= 22a2tb.
. \91
i a -
4''2d9tb
ZM^-o. r o @ ( i o-) E 7 ( r o ) - 0 r ( $ ) - E r ( s ) . o BUI: E4. " E,lo :- 4- 1.5Er -o i @ < 2 ) - ( \ 5 E / ) ( 2 )- o ' ( . ) ' E a E at 2 a , . e . a o - - @
Or - 193
6-PL
Refc..inq to llbhl .q& V'bw, + cr G) o/5)'saaG) "o zMb:o: ^z1't(hiaj)(s) t61)(1st633(s)r la3ci) | 2w Az = - <2271 Az - 166.7 ll).
n rOP6?1 63r) The boom Bc ofthe ctiff'lea de'rich 6hown rg.s-lsin i6 conto,ned in the XY ptono The mo€l AB ls "e'rtiaol \ ' o soohel ot A PoinfsA\D ore in the same horiuonlol plore the Points DkE ore in lhe.eome v€rlicol Plono Detormine
usn]gq . 4944 - ao/eo Gas) Dr ' soo lb ' bo//@ @/aa . , BD. 612..+ lu. uahs@ NU)-Df "7eo Ar &) ' 7c!:4+s.22 Ar . 7@r/4 :. A-/ = t61stb U6ins Ez ' 1./16Er .4y'6(379) . 2so1b .
oa'l6e(ot/za
' zso tb.
rcGming 1o tujlhlside Vew I tF: =oAz'E -Dz'2. .'. Az'o
t28
t29
25a =O
632,) Thc boor of ihe &rich 6bo* h 7lgp-632- k rolol€d bock 30'f.6n lhe fi rlone. Dek iniie lho {iroce in gc kBD }, {he
1.10.6,.0'.
rolt.6' - b/^:6 .\n6o' - 6 /.o
a.@tl.
:, ft -.o$.'. 6 . ir.32 n.
1ar,@.. 1r.r/6^ .-. A . ro fl . (Ge'-$/A,.'.&.20lt. de -,GoAfi a.A:ofi6'i-Lry ".a 2t{l L, 10t a 5' - 'e '6 rt @'aoton@" 11''att' $r.2e.2. $ ae.6il6;f'('+. 3lo "2"'" 9c'816 "' L'
Choplor
lnE4O q .
'
q
l
I Dt'1132 .fi32'3173nA
8o - 11e4.6a+ n A T
'15444lb
Coniroide \ Contors of Groviiy
-'.go ' \63tr lb
- Ai Ga),2db60.6c) L o
ot'!91e.L9,
zM^'a O
c,'-trzfi@24
C',o)@- rlro(s..6) ' o Al +O, - i7z2 - -O loble Right gddview,
ce .199.96tb
02 - 1t9a 6a+G1.32)
Dz = g9.ec lb. P.l. lo Qbhl Etdevie : .F-'o O.-A,-Cz-O Az - 939,96 -199.96 Az'saott)
Cr (.1.a4) - pegg.z4l&
r30
l3l
ihe ccn{fti, of lhe shod€d oreo shown i" rg. '|6 by barrdcd lbe l( d'.i€, the line x ' a q th" pd'
7o7.)Oelehine the cantroid ol lhe qu6d6nt of lh€ ellipse 6hown in f1:9 P-?o7 The eauolion of the eriipse * !fu-, *
c7b"'1-\7o'
G,b) k- e% - b1a
'
a'.- bay'a- u- blr&
d
-
,t = b/aq;n-;t)
n-f, aa,-fi ary*a^
^r =f iG;,) "f,,(u.e:r)a^
t.f a' =f w.F:ta, .. slnq='/d LeJ r=o6,a dr = ocdsqdq
.8"1-,^.wd"-:,l{i
- Va[ h@+y,o.] Ai - !d = eEI i 7 - &/'\-
ylJ7.V ac!s-..Fi:F
'chgud,)- hr e!d, A,a -f h,ll(*4) a^
^. rt*")("-"-" ) -u"l!!;.a.,,^a^ _ .obL hL11@atd4
_o,1..1a.,_t%]:
-4f"r€r3:l" 7 = 3o/s
- lle +
4t 7o6) Detffiir€ lh6 (btroil P-7o6 whd6e nddius is n.
'N'r" .1.
l.; ^f,\
"l "
^':ld^.('(adl
{'*'"'.,".. )-h.%G'-'")-L
-'l t'{i,v";l
ltt
of the quo.+e,'
- n.'
-
oircle €ho,n
in Fs.
A- fed' -("$.+ U' _,/. ...6,^< .,,:;,".
e J;"+ N
'9'=b/8
p,.l$qd.
^4^
t.t!'-*?.-""e-t*":e ('" f -1-a-(fl4,-"""1a,
' o-'E J ib lrh tt'PL
A - obi/
14,tq"4
7oa) Cfivlle th6 o.eo of lhe spondrel in Fr'g. P-7os bounded by lhe x o,i6, tho tinex .b,q the cuNc g=x,n wheG n Zo.wlEt ;e locolion of lls c€hl.oic fr€m lhe line r -u ? prepo.€ tfe lobke ot o.eoc \ lo@tion of cenl.oid f6'- 6iues of n.o,1,2,ta\e.
r"*=G-F
-+t-''al: -+l'^'"d" #1
a'h\Yb^
^.\1
Ai'l,"a 'hJ'!ad'
' r,(: (" ") d' - t'l'"' 41: ^i _;i," ^Zl - ".2
edx.
^--f,,(dr.f,.(#)d" ' h4^f! t" a, -hA^t#7:
t'4+ai '%.f,1.Ji "%"i++-"-l-!\r --L lu--'r1
, hr."T-hil: - o'1 = rt" r =!Gd nr'
A - br%r
t32
- s_uZ,
133
ut l'i" r i" -tf.*a r.(oo)
;.
-t-l en -' {
7oe.) Deledine Problem 7oe
n5)
- b(nrr) - b(nr1)
b - !ltl])
Dele.fiioe the @rdinolcs oF t|€ c&t#d in Fig. P_715 with nespec+ to fhe eiven
st'ovn
C c ' d l- u z -
, [hn.,]-l# , e] I xt x"t , y,r r't] s -Lt^Gxqora:'
'41eaa1, '2^.t(.)-/e(d(dr"rt tp'6a ,21) Befe. ro the I_ 6€otion of prcb. ?t+ shown io Fiq. P-7r4. To vdlu€ 6hould the 6ir. width of ihc flonge be cl..onged so lho+ lhe cenfroid of lhc orgo i6 z,s in. obove the bo6e 7 I1(e) l b(1Yr.r) = 1(s)(ar,) | b(rxo.6) ?ora.ib-4+o.6b ' 2b -20 I 722.>t@le
lE
b_10n.
@a+rcid
of |he ehoded
oreo i^ Fiq. P-122
by cuiting o €@icicle of didmeie. r frod
o quonler c,rcle of
'!#("-#)
ll;
l[|1 a
= rl
--i -gL 12r
= 0.6.7.
s' ( /,Y,'th'(-"16)(/,)
o"Zj -.% - \.7ts - 16t:: str'
r,%_s- 6 5#:' E'-e!]g-r-
, l:!t@ - n ctuelr=ly@k)(E',\[kbtu"X% aq 12, - s7.6
r36
t - +.€fl.
n i .[.h&doe/a..\ - lh a>o)& -d
,t2q - 3€ 9-3ft. zr) Locoll3 lhe lglrc;d of the cutvenl st$*^ i^Fig.p jz1 tlnl. ln tog.a{,bn ie onneceosd.g tf lho o.€,a i6 €ubdiv;dei into the eloment b be fdrnd in foble vr-1
, -'+
1.o-rs(+Ydt,fa&)1.\')(./') [r(kJkx')t r /.it't') - e/!)(4)(1.)(ye.,\
7/A_t o 3aer
- {t)
1++s93 E . Ea,a6e J'5o€in. z26) tr:.afe lhe @l.o:td of the .sho&/ dr€o eotc\se! b9 +he cutue lhe 6frc;9hf shos l,ie in Fi9.p-1t5. HinI : ob€€Ne ]ha{ U..o' \ lhe tuNe q2. oa retot've to the y 0,,6 € of 'he @me tbFm 06 9 " ^xz wilh .esp@l to lhe I a'i6.
c!.nPulc i foi lfE 6so b.u'dod o.,rl€ g'a\ t t/s-a/ao ' ,"'r
+- ., A . Iz" +\i6+ rlr'1.
A-
,.e)
A
At.€Ad' - l: (af ,'7e- ^'/e\d,
252' = 1q1s z I ' 760 @'ts ' ;. divided
!.t/*..
_H,r | ,.h, r7...1"
292 ttil.
rcclor5j:B
|t(1\1)!j,(1\(o,) fiO r'(t), la)Ol g . 1i,|,tr...) .o, - i11 . g -o;7 in. - 1(.)(7,e\, (t\ @)O.cs) zW
b/
iato
two Porle
b' il'c
E.) cuAr'e g-^r"
oe ehorn h Fb.,P-22e.u€trq #E knd$n bcoiion of t's conl'olt of lhs lo{€,^ poei A oc aivon in loble vn-l' 6t'ow ltlot ttE cenhoij of lha uppecpo"i B i. t(rolea WtB-/,iA\Eg"24^..
Two 10 in.- 15.? ti
72,+ \nl
chonnolc orc werded
ioge{hdn
os €h@n
h
fu. P-7:1. F;d lhe momeniof a"ea of the upre. dhonneloboul the ho.;o"lo j @^|rc;uJaloie rroof ihe o{rro ceul,o. o@
ol roi^- E,e lb - a,ar i^'
2(aaa)6 - a.+a(e+ rrc) ' +.+rG) e.9t5.67seG1
-b6'to rhot c^ *n erAhbl^
g- ,.86 i^
. b(.rz)-b
r^.644
FD-*lr"=br'
\-E{,1
f F{s. p-72r. Rela lo Toble vl-z 0. +t? FoPe.+ies of the o.9t6s q b.-te,.!"e cntrcid ot t€ bu,n-up cal,;n
/r&'
\16rit/
bhni, -)L-EL
6,8 i.ft] [e(i)r r(E) t
=b."!nti;?b'h. S
2(e2)
#Bt'=bh("'4)-(*)D#}l
'F-5"- b##r
-*ilE".W 5. , h(nrwri .. l. .2rA
138
" ale.ra1s t- &'sa'^'
r-a - b\,&'-r-o 16 _ lod
,ir 7,o) A b@n hae lh6 oro€c eotion shos fia moft€nl of o'€ of ihe sked Po.tion an+rodor o'i. xo of lte *lire €e,lion. (flole llot th c E€.lte t. laa i^ €ht df -ol;ole x,itum cheonrg sr"esj.
xa5
5 . €^n@!.') r (i4)t.) ..,s(.-otu) r s,sGrs)
enlrcid of lhe buill -up solion €,i,bn €hadn ;r to lobb vn-? ftn lhe popo',tic* of ltc ebrcnls.
l :
tF''E
{ 4(o.'),(+)j t. B (. n.. -,..,) t..,,(a*,.^ | 6.Yo'Y6.r.) i/6dYo.') 27.7.s 5 = 462.4d J
- e,+e in
F9. P-%o,Cc'nFrle abo,t tha ho"iantol , tt ic e-t'o.. i' 6llqJ e n@cr'P'li'q
r38
l l
ri
t6 rololed oboui ondxte 7e6.) A riqhi t.io.gle of sldes b\h coinoid'ng wiih €i& h lo gerP.ola o righl cl'culo' c'r€ ' I
v ' ? r tt. n a - A r . k b - | A b r l 't = '/'rb'h
A .,"1'\
At=Csba,)-f e"d,
'f- okG'-t)"
v
- ut.l", i'"1\ - b/""|d - "% , ""
-"*.:+.+ =;fr"u.
Yepune- st 4-A
"/f,
A4.bTll 4421
-,1ij""1*-*" -r-*ion6 l; the 6v.fo<,eio@ E vorumeeene€ iod b/ rololing o semic,rcle ol.odius . dboul ilq d;m'ie'
73e) .sfbw thdl the volure of o Porcboroid i€ eq@l 10 o€-hdll {ha oiccumecn,brg oyllnden , i '. 1)a' A; ' r A.J-l4 'r\d,
1-^.,i
o"/6"(t" -5") vdqre
' l',"/v'(t'':')av
A=2t i L6alh of ("-e
\
t''
+o'h
i - 9 7ro) ,A oille of -a;,3t" t;'" 'r lhe xy pronewitb rtc oaltr oi o d,6+dn€ o obovc the x-o:is. Royolviig il oboul ih€ xoxis will gene.ole o doughnul-shope ri.q aoiea a torus, poraea o '. 96al*
thon..
Coopule th€ €urlo.e
a,b
q votume of
-*b
{ 2 3
't
h bQ.h
Delamlncd {he vdluBe of the cllipsoid of ^€"dluiion qcro€.,te (c"olote ottrpaid) mia'a'ic q l6d rolotihq oo ellip6e obout o) I b) ik olnon oxis (oblaie etlipsoid. Toke the lo.e{ s@;o'h o. d \ thu smoll+ semi-or-'s oe b. 7e.)
,7b"' ' 'Z'
r>."'E
f .q".G'',)
140
,a1) A 6a' ptpe eibow ho6 on inlenot diome+.f, oa 4 in. lAe .od of cu.votu€ of ihe pipei oontrt,re ie ain. F,nd +he inlqnot wl. v.Atuo x hrrcid
rd6io"* +"..*ed V = 7€.e6 ih:
t4l
. t(4)4- 6 _ (er' "r/.d;)
7ar.) n;d lha yol!rc of thc Ephedc,l wedqe fo.ned ,y.rlolidl lhrough oh ongle of .6' o cemici.ole of rodid r dboul ilc bos€
\/ -"rh, y?r -r
v-_rc-
z,+!) Tl€ oreo con.loined tEiween h^jo ocicenldc €€oioil.cte6 of roall t.s;tt q.;n. iG .ofor€d obout clrlo:,s +rn.owou,i\ porallel- lo lhe boee diooele.s oF tte eemio,ote*. Co."putJ lhe surlooe orco 1,)votvhe geoeroled bg o complole re,olul@n
7si.) gctenmine tho crntnoid of o hemisplrerc of mdrus n' tching lhe otis of egmmetng os lhe z oxr€'
.
".
tlr':
-rl-I---l
^r.?
$''"1*f 1 '
(e*rrdre)r = r(+)(+)rs(er+@'o) 2..s4t = t4r'elo i -c.5+ in.
!
7!6) Dol..ninc tlE hciqht i of lhc cgtindc. mountcd on lhe h€mi6ph6.icol bo€e s*'6^n in hb.P-7s6.Eo lhol the conDasile Dodgw;lf be h sloblc equilihium on ils bose. flinl: y',e tong os lhe ccnlor of groJlg doos nol lio obovc the I-x plono lh6r€' will ori€f o rcslonhg couptd whon th6 dq ;6 l;ppcd .
r
p-76? zar) A u.ifo"o wirc is bal in'lo lha shope €ho{n in F€ The cleoishl s"4@ols lio in |ho x-z Plo(6' \ thc. e.in l4elh s"grnar.a o" o"qtce of 30' wilh the r orjs. The .enic'"culo' w''c af lhe oool€' of menls is in thc x-Y Pldne Locdte tho sE;'lv
'
1.'2-127 - ++4..2c i. -11 it. frcm opa
;r65€ag " r G\(+) e6,s6cg =32 g ' 1 2 0 +i n ' 26,s662' .(!) + e(aetn3a') 26,66.2 - 3+
z-r2ah. 7e+) tocote the ce.iol g6wiis of o st€ol .ivet hovinq o cgI'hd.icol bodg I in in d;onclo. b 2 in long wilh o hcnispr'e"riol hcod of 1 in,bdiue. Uso lhe.6url of Prob 7s1
r("/h(h/)-\trGfW4a) h' - 2b't h = r.4l+ fl.
?s,.) Fcpaol Ptub-7s6 if lho cyl;d"bol porlion of tho bodq in llq.p-t!6 G raptocadW o r,qhl .t \t:cotpo.l,o. *ilh o 2 ft rodiuG bose q oll'tude h.
A,
\+/
lk efh(v) - 4//0f(//@) h"A=+
h-3+64f!.
7se) sleel ball ;6 dountod o" l,,p ol o Lrnbor c,rtincre. os shovh in rig. p-zso Sleot woighs +eo b po.or n q timtc. *o,qh, 1oolb po. c, ft. D6le..mino lho pos,lion of 'ho ocnlo. ol qovi
ae) A bodg codsi6+s of o nqht ci.oulo. aonc whoe ba6o i612 h. ;n. de.p s in. in d,bncle/\ who€e ollitudo i6 16 in A hole h a ocq a"iled fiom {ho bose lho o.is of lLe lbl" co'rcidog -/ thc o.i6 of lhe aoe. Locnle +he (gfroid of lho el volume. Uee lhe
tbhf)
(rc.o2+te.oa)g = rc.oz(zet/1e)t ta.6s(p x /z) 1a5.1g = 2a6.$ = 3 r.es fi frum boso
tusuli of P.ob. ,{€.
t45 144
*\(60
So4) D€le.mir€ lh3 rnorEnl of irE.lio of o tdlo.Bte of bose b \ olhiude h wilh rospcd bon o.i. ihrough the oper porollel
to the bose. Uce the lrsneG. lcrmulo \ P(& soz. l"- bh'/$ t = 7r ' Ad'
th€, rBarll€ of ilto€ .
' bh/r6 | bh/, (zbh)a
' bv?/& t 2brP/s 1 br?/4 60!) Def6.d,he the norcol of inerlio of lhe guoder onljte in FIg.P.8d9r,lh r€.p€., to th€ g,sn orc6. tt J- lp.d^
Choptor a
r- f,-r(4/.di DY*']P1 . L+/'4p \, l/r . r.
+/.)" +".
j
' i' ri, ' r'76 r, . t.V6 1r - n../.a
Momon{sof lnoilio
' 1, +1,
8od Dete.n;B lhe dorenl of in€rtio of the €ed€Fcte ,h Fig p-ooq with rB6pc.lio thd q;6n ot€c.
1. --! red{
.gfy'^"vyaoay
=f, l' /o2^"+ae
= 1" ./a C a.'ede
[
P/* k-,ed.)];
. r./a C y. r.coe,6)do , t%re - s^,e/a: . r'/. f(l-o) - k'"ry - qho],7 I'
r €o7) Sho"v the momenl of ine'tia ofo s€nicircb of rodi'Js the dbd'etgn is orira with respecl to o ceo{roidol o)'i6 pomllel lo
sla) D6{em,ne the morunt ol ine.lio \ the redius ofg7.otioa,V respe.ctto he Y ore, of the oneo cL,l f"om lhe first q"oaront b' {he curue y . +-r! where i \ y ore in in.h6
nr'-/rr-\' rc' . I' +--u-'\3{ r-. i, rAd? - --z ' o.921ra ' ir I o 26Lg4(+ i, ' o.\og76ra* ot1ra qr'roclercircle €oa) Detcdnir€ tho momenl of rnerl'b fo" lhe sho{n in Fb p-8os wilh respecl to o cenlrorldal X-oxts
r-/"Cfd^ t d .rd,
t
= -(oa) . a
rf6r"-,.4)d"
\'La'(A- f/A: \
+(4t'\e-of- (,-o)'/4
- ("/^)'h
^'frd, .tr'(..")di
t-
32/s -t2//e
- 16o-
= S*-'+
A 4+t - t'h l-
rr'IJ
^ -iy<*a:t -ttl
#=t"*(*f
' 8 ' s / - - -2 + ' 6 ' L A i n r
+ 0 . 1 1 1 4r71 01 3t-7r = oo549r+ = oo55 14 It tfc mo6€nl of iner{ro with 'especl s€e) Dele.-irE *hoee e4"olioi foc lhe o,.e.a e.eb.€d b,/ the s{iPse
,l,lecdeler-i"e the@iis ca gyrclio"
"4 , + , ,
:.,t.1W4,V6.h)=f,6 o11.)Dele.mine
ihe mmenl of nealo w/ r€sp€ol lo the x ax,s PoroLlrlo q8o shadn in Fi9.P'€11.
4.*'' - "'-l'"&7d
,
, - "toV1;
,'i,-Jy,d^ =J./.ardy
i,. +f,f (otow ) at
b= b6'r'e Y _bene e'e4 - a-'7/2 dY'b.ae€de . a b co'€- dd b".ie @/b) (b'- b'"."4) \-+f = +fh o'o " a"+<'x"ede
- is (''r"a ,*n)ca\(, , cx*"")lae
. ab. (t, ex.,e)da l/ - lr(-. ' .66,t de ob"Le ek - 4^'a/s1: (t ob, l"' = ob'5B./+o)-6n'?!-5nolol - "6ii-p - ""*761!"
?,.p-
.. t,.t*rd, -f t'"X"*) a"
>
" =Y1t14"aiy.r atf t,,'(bZ)'
- b/L
148
I, -{faa d^- (a-t\ar ; t -x1" *=x1r" 't/'G-"/sr')d' t -o/b'r' .a/b' . ('6v'- &'(t') ) at
i,'[;;1 - "/t('%t .[2,<"-r"[+utfiuoll 1r. oF/" - ob% - "b%"(s-e) . 2ob/as . e.2) De+smt^e the I/ O. the €hadeJ pa@Wrttcotta of fig.p-o11. rf'l,.dA Ll-\t'bl4odt
8'lo) A rEologle 'e 3in. h5in. Do€nnina *tr poLcnrtrnanl of irF,r.tio\ firc mdiue of gTroiion *,lh r*gccl lo o poldr Q(i' throvgh ona dner
l-f/,///) 'V,/) P
1
6i9) DaLrrnine the monE 'l of ir€plio cf lhe T- 6eolion i^ Fb.p'8@ d/ (f,,rc'i +o'lc cenlddol oxi.
n
r,=!, rAdr t. - Iv+Ad' +.('xe)t ' ar6n1 ,|'*l
rr
. L(6X2r1) t .
s7
I ---f I
shdM
i' - 4Ol | ,(6X..'r'4&f ,z
2
I/ - qFf + 6(!)( 5F ' sa inl
1, - 2so,6, in!
li.r@Ya).3an'.
82o) Oelcmine the rrc nenl 6,f irrorlio of thc oreo etrorn in
- 216+9+-270in1
^ . F 6 . - , @ f f i - 3 . 6 ai n
Ar = 6(l)r{2(r)t€(r) = !oin?
srz) Deteffine +hc .romcnl of ins"l,;, \ rod,us of g/rat'bn wrth reepeci too poloc ceolrodol oxrs of lhe o.gss eclion ofo l'rol_ lo, lubs who€d ou{sde dio.nols i6 6 in q ln.ide diomele' it'+1
8rs) A hollo{ squorE o.l,€6 6a.}'on cdltsist6 oF oo 8in squarc fro.n rhich i5 Eubt.oct€a o con -nl-1.c,J,lll PlcrB cqlat'e 4inbf'+'r' F;^d llp @. na.neal of inerf ;o ,\ the @a" rodius of grrclion lhrpugh one of lho q4e'ile oomers *ilh reEpeol lo o z oi,6 Po*iig
Ii, -gg!*
i, =a{;)' * r2G)t'.z)a+ilgt +jgf
- t/zGa'-t)
A.]E,r1\n
- 4z(i.)(o,e)+ 12(1)(1) | 66Jh3.r)
et
^t
.tut6)(6/z) - 72 na
i' -lgf
, 'rzcaxoxo.Sz +eg3
+ 6&)(a,s)' t" = 19g ;.'
l6l
lil $i.
ii H fii
ilii
8zd thai
- ds6h h.JE-(&Y i,. b(ae6bf - ru+.lo-'ba
i I
I
i
An aquiloh'ol t iongle hos ile bqso b ho''tonlol- srx ltp centcot&l rornenl cf ire"lir x'lh 'espocl tot'o'i-
12.5GP I h(i2,5J&)(6
ofL\Ir.
oea) C.actprtr-lt'e n'a'srl of rls-lb *ilh reepcci roan ox;e tetqrl pascir€ fh'ough i*o opPo€ilc o?crcs cf o .q'W 6 s;de o .o-- aao/6 - G.,. e.ob/o -@cVt b-,y'2
Y.E:6hvh