Question

6. [1pt]
For each of the six truss diagrams, indicate whether the member in question is in tension (T), compression (C), or zero force (Z). E.g., if A is in compression in truss 1, experiences zero force in truss 2, and is in tension in trusses 3, 4, 5, 6, enter CZTTTT.

1) Evaluate member A.    
pin O roller
     

2) Evaluate member A.         

3) Evaluate member 5.         

4) Evaluate member 8.         

5) Evaluate member 5.         

6) Evaluate member 7.    

Answer 1

(Lsim co) Com RAY [ fxzo C++) -- RAxtF=0 Rax=F] . I fy=0 (4+) Raytrc=o Zmaro (+2) Fx (LSingo) - Re*LEO REF.sim Go 50 SGGF Rays -RC=-0.866F method of joint, at a t. From A Foo Feasingo FCasto Fegusso Rc fyzo (1+) Ret Foosingo 20 0.866F + Fco* sim 6020 FB =-FI { fx=0 (+) - FCA - Fog CO260 = 0 los 60 FAS- O.SE (F). Cos GO Hence force in member A, IFEA = FA=0.5EAM