This** preview**
has intentionally

**sections.**

*blurred***to view the full version.**

*Sign up*
This** preview**
has intentionally

**sections.**

*blurred***to view the full version.**

*Sign up*
This** preview**
has intentionally

**sections.**

*blurred***to view the full version.**

*Sign up*
**Unformatted text preview: **Chapter 3, Problem 2. A 90-N force is applied to the control rod AB as shown. Knowing that the
length of the rod is 225 mm, determine the moment of the force about
point B by resolving the force into horizontal and vertical components. 4 E ,1...
r5
\
A
(p Bme“ C0m§onm~k ?aQ) wf oft "m
I“ IF 1‘1‘3 ——l— +o RE. 30 h = F ups. @ :
"F: 51m) M
m Mo maizﬁ Cow on,
V15 : FA. {ﬁlo
CCCLU 3C“ 100 k) 0,53 50° $0) NOV? \‘(om cm“ gout, MAL, voh|cw~,v:1 am ‘.
Sistﬁm Cadet/\«Afﬂ, quocné rig vxé 39M, ewﬁ‘uts, ﬁbn MB: 7/r/IIV//I/y/I/II//II/y1115W”yWIIWWWWWWl/IWMVIMWmInAmuullnrz/‘WuwwmmtwmWMWWMl/rwmmmeﬂvnwlyu/ i
‘ i
i
\ i
i \ §
i § ‘
K \
§ § i
\ \ \\\\\\\\\\\\\ \\\\\\\\\\‘\\\\\\\\\\\\\V\\\\
*\x\\\ xxxi\\\\\\\\\\\\\\\\s\\\\\\\\\\\\\\\\\\\\xxx\\\\x\\\\\\\\\\\\\\\\\\\\\\\\\x\\\x\\\x\\\\\\\\x\\\\ §
1
l Eliapter 3, Problem 7. "M/ymwmwMyﬁwﬂw/MWIM,”gmmmmmmw x, A sign is suspended from two chains AE and BF. Knowing that the
tension in BF is 200 N, determine (a) the moment about A of the force
exerted by the chain at B, (b) the magnitude and sense of the vertical
force applied at C which creates the same moment about A, (c) the
smallest force applied at B which creates the same moment about A. E % O f6}: : 203k) Fx : \—<Lc>s (00 'o X : am 2 C200 DECO?) 60 on; g
so. 4 o M 2 ‘00 U ‘3 A vs .... , 2) \» = P s” v» (p O “s \ 1r 3. Z M v \
\
w \
i\\§\§§§x§\$\§\\\§\\\i\\\\§\\\\\\\\\\§\\§\§§\xV\\\§\\§?\\§\§\\§\§§xS§xx~x§§x~xw§x§~x§x§§xw~xw§\\\\\\\V\\\!\\\1.x!\in}Rx)?1%w~$$§3§§§33§x»\?§\wa\\\\\w\§\w§w§§§\w\~\\xix3}w\\\V\\#3\\\\\\\g¥\§\x§\\\i\w\w~x\iIxxw§<§wx§w§§x§w§ww§xxxx:~xx\3‘xs‘xxxxx\aw\b\\\\\\\\\~\§\\~V~\\§\lss‘\\\\\\§\~\\x-iilibiisbi\\\\\\\\\§\§\\§\x\\x‘\l\§xxx}\§\xx§§§§\$§§\xx\ii\g§\\\\\\!\§~§\§‘§\\\~\§\§\s\\§x§ \ 3,2)vc0n4-
\ Ra?) W. ‘Co/cge. "it;
\i “a, \OC:\“LAD€~€\’\ C ZOOM ‘—
In. 339M MM 1%? H D is:six»‘zi§$§$3::3§§is»§§§$5:§§§§§§§s§kk§ss§i§s€§§~§i§§§§e$§§§§§§i§§§§i§§§§§§§s§§«is;Eiiizs\3§s§\§\§§§§:§i§3§§s§s=5\iss§§§a§§s§s§§‘§§:\s%:§§$§‘§\§§§§§§ p PROBLEM 3.13 It is known that the connecting rod AB exerts on the crank BC a 2.5-kN
force directed down and to the left along the centerline of AB. Determine
the moment of that force about C. ‘ 88 mm 56 mm {3‘
Pas LAB : Elm“) + meh’y
9
“W : \50MM
1 0
6107834 3‘.“ ® -: :2 MM @: “0‘39
(Bl Sbmm 0 MM
M—HDFILN) __ qumm
[— qzm—l C05 ' 360mm
FAB : — FAB Sun-Sf; -- Fag 6,0369% :. 0.4 mi. ~ a-ané 2 lootJL '9400 U3; 5 VNC : \ qamm; — 5(bmm6 : “0.943M5 ~0.05(om«6‘ Me‘- <.MC‘. " FAB 1 (—064; m; —-o.os7oj3x (~400L —uioo~3) um iMQ b (a Lxgﬂ
éXL :‘l I
f
g t
I
“mmwmaw,1wan/mm,uwwlmmwﬂwwmamwwnﬂwrwmmywﬂ, W,,WWW,..,,W,,,,WW,mmmmwww,WWWWW,WW,WWM,WMMWWWWWWUmm,W,MW,wﬂ“WWW,Wm.“w,iMWWWMAWWWWWWMWWM"WWW, Chapter 3, iimbiéin ’25. Jr THO = O; + 302} "t 3:. K bﬁeé ah Tat " (’2 liai-
: ~G;\lo;.<:oséa‘3 ~ can“; Sm to“ “\‘300’a.\l2,\\ *1? “(KL XVK "elahe. Before a telephone cable is strung, rope BAC is tied to a stake at B and is
passed over a pulley at A. Knowing that portion AC of the rope lies in a
plane parallel to the xy plane and that the magnitude of the tension T in
the rope is 62 lb, determine the moment about 0 of the resultant force exerted on the pulley by the rope.
R Q "G , 301 "El i ‘1").—
where. TL ‘2: lgﬁ all l‘p‘g ~ bl.\ \lo.§.L - ma tip; AN?» 53;» é. ‘I {“efczllcsm'.; if. W ‘K 3 J? 3 5 v i 5 i § 4 6 1, 4, w
é 1: ; i i i 5 i Z 3
WWW/WI,
5 i 4 i W W «lg/u “my 7 J , —r 2\
7 E , f t ; ; ﬂ Steel framing members AB, BC, and CD are joined at B and C and are
braced using cables EF and EG. Knowing that E is at the midpoint of BC
and that the tension in cable EF is 110 lb, determine (a) the angle I; , “3* between EF and member BC, (b) the projection on BC of the force
exerted by cable EF at point E. ' IrayWu/A/l/mmanMw/«wulmazyomruo/wumw /n/”Wau—wm4w WM M WW 3
W W w , , , mmwwwwﬂwm,Wmmwmm,M,WW,WMWWMWMV”WWW
, § 3 i 0} § M’Mﬂ‘erm Axe-NO vac,le r5, i 3 § ~ >‘ ’>‘ ’
C0039; x“? Q ,_ BC EI’
"PG \ 1?. EF’ :- I d3 2 322. 4% -gJHL .BQ:LH
23‘ ‘: “"I‘is’lza' + tsz E): :. 2,; (azM-H\+ (ABC-)ﬂ +~ (“'ZLéer)
W E‘) C; 2) Cea‘ée “0.522%;22 lg: @qu [email protected]=~ §
§ 2
§ 1
§
K
s
§
3
S
K
9
§
3
§
3
$
§
3
s
§
§
K
:
§
§
K
t
3K
§
§
E
s
3
K
!
K
i
i
s
i
s
K
\
3
§
K
i
§
K
§
§
§
3
3
§
§
$
§
§
K
3
§
s
s
s
§
3
§
2
§
§
3
K
§
3
3
§
3
a
s
K
3
2
K
§
§
3
K
%
§
a
3
§
3
S
‘3
i
s
K
§
§
§
K
s
3
§
K
E
K
s
K
i
s
§
K
§
g
§
i
§
K
§
§
1
§
§
§
i
:
§
3
i
i
V
§
i
E
§
:
a
3
§
§
§
\
s
Q
§
3
§
E
K
s
K
§
E
i WWWwKMW“\me\\\\\\K\\\K\W\\\m“m“WWWK«NKw\wmw“MWMWWN““M‘MN‘W‘K‘Kw”KKw«\K\~.\\““\\\\\\\\\\‘K‘Kv\\\N._\\\\m\\\wK“\\\\\\\\\\\\\\\\\»\w ¢ T ~th m.
m ﬁgﬁg in; . 1 $01.. 1 —?C636/ 30 35?: \M’, $§$§x§x§§$¢$§§\{KVSx§x§xix§ixit$§§iixxx!ixxxxxxxK‘skxxﬁ‘it~K\\\§K\\»\\3§\!\K\Kixfixibxr»K‘th3!ka§1~§§§$§§§x\§\§§\»\\\\\35inV3»$xx§§§§~x§x§$§i§§§ti5§x3i3{\VxxK‘wﬁxk‘wSxKSSSkaisstxxx§~3§§§§§K§$§$§$is~x§§t§ié§3:53§3§5\‘5be«3xx333$xSix£5V35~§x§55§xx~§w§xi-x3§§x~3x§x~»\\\§\§§§§§§§\§\kxxxixxtxxs K_\_/
V ...

View
Full Document

- Fall '07
- MaureenA.McGraw
- mechanics