Question

and state if these members are in Determine the force in members EC, EF, and FC of the bridge tension or compression, ft--4ft -101 -10ft- G 101 6001b है 8001b tey 0:21.E Bab

Answer 1

soluHon. given that uft F ufe 800.lb Goodb * Free body diagram A. Roy Pay 800lb Goalb of Calulation angle o. from Trangle AB . Ganco 10 0=us°

EmA =O Roy C28) - 800 C18) - 6o0 C1o) :0 Roy C28) (4400 RDy 728.57 lb 0= 43 RAx=0 Ray + Roy -fo0- 800 Ray + 728 57 - Iu00 - 0 Roy : 671.42KN By using yerood jo ints FOE Feo | Ray Efyco Ray - fie sino :0 FOE sin cuso) =o. 728.57

FDE (030. 35 b the joint E. Consider Ely= FE t foe Cos cue) =0 + 1030 .25 cos cure) = o Fre. - 7292b Ffe = 72906 c) fee Take joint E FEE fED FEC Efyco FDE sino - FEc = 0 Fec =0 (Lo30 . 35eb) sin Cuso) = 729eb C Tension) Fec (729eb) Tension Ec is Force in member FED Cas cuso) FRE 728 S6lb 1030' 35 COS Cuso)

Take joint F Fee Fre Feo FeB 800lb O= 68-19 fEe sin (68.09) + FEc =O 800 - fpc sin (68-19) - 729060 800 7726 Tensio n Ffe FC Forces in members 7294b fec FEF = 728. 56 Fre 7716 Anscwere the Comment NOTE:- Please on den't give but mistake had it any disli ke.