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5. Determine the force in bars AB, BC, CD, and EF for the truss shown. Indicate if the bars are in tension or compression. Th

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Answer #1

RHA EMM=O (C tve) (Rvax 36 ) +(10x 6) + (10x12) -15x27)-(15*18) = 0 RUA = 13.75 kip Efst = 0 ( tve) 10+10 – RHA = 0 RHA = 20z fy = 0 (rtve) Rua + FAB & FAL sino =0 13,75 + FAB + 24.037 sin (33.69) 20 FAB = -27083 Kip (compression) Joint B Tokip FABFyr = O -10 - FCP - fer LOSD = 0 ... fed a -10- (48.82)COS 33-69 ../fo = -50.62 kip 1 Compression) Take section x-x 75 for 10Take ý on E - -> For I FEK E Faro - FE & Fer=0 TREF = fpE =-48.75 kip/ FAB = 27.083 kip ( compression) FBc = 27-083 kip (comp

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