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Unformatted text preview: problem 245 2.45 Links BC and DE are both made ofstee1(E= 29 x 106 psi) and are i in. wide and i in. thick. Determine (a) the force in each link when a GOOlb force P is
applied to the rigid member AF shown, (b) the corresponding deﬂection of point A. (200 ii: —
gmgc wé9§(§}+ ﬁﬁvﬁg ESQ FEE: ZFﬁg—Z‘pr‘p ‘ Problem 2_ 39 2.39 Three steel rods (E = 200 GPa) support a 36'kN load P, Each ofthe rods AB
and CD has a ZOO—mm2 crosssectional area and rod EF has a 625mm2 crosssectional area; Neglectingthe deformation of rod BED, detelmine (a) the
change :in length of rod EF,’(b)1h'e*s11ess:in:eachrod‘. Use membaw BED a6 a. ~Hee £0417. PM? > $305» 8)] symme/‘fveb ow b7 ZME :0 R0 = PAB 948+ En +PEF " P :0
7: ‘4" 2 Fﬁg '7' pEF 8 : ....... : PancE S : PEP LEF
A8 EAAQ ' ' E Am ’ EF' . EAEF S;V1C€ LA‘B ": QANA ‘AAE 1‘ ACD‘) 5,375 : 5CD ﬁ —— .‘Mnce Par‘n‘f‘: ‘ I 'bjqv‘tz Jake's?) SB : $.45) SD = 5c}: gS’E‘ :‘ 55F
SE : ~S‘G 1” 3:,
 = Age 122 _,, zoo . m
. as A5; L'AvTS PEP d 625 ‘500? 735‘
, , = 0.2% Pa: '
2 F1“ PE; .— (25(04543139 4.123: 145:9. P9 ___E_ _ M  As .
PEP ‘ 1.5/1 ‘ LEIQ _' 23‘3“) “O N“ ~. as = Pa, = (o.25:e)(23.8;oxzoaj r 6.0?5’wloa N ~ g e (233/03’10‘M4'ooMo‘s?
S 35; ~ mg
M = ’76. 2 >110 m ‘
,Zadxto ‘7 ) ( @253: I o" V ; .
( ‘) I = 0.0 76 2 MM “a
"rev 8 _ ‘5 _ (aoayxioaﬂébowo‘sj ~ , .
— ‘8 M ‘ (Zooxlo‘)C1oogx£Os‘} : 75.90410 'm ' 3
0‘5 6A3 : '51.), = :‘B = ‘W = 305X10‘pd= (30.5'HPaaa ~
AB _ PER. _.:23;810x103._ _ . c » _ , 
55,» v—Aep ~'W  ‘33.} X10» 11%, 38., MPa. ...
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 Spring '10
 Jenkins

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