Figure $1$: Truss subjected to loads $P.$

Question $1............................................................................12$ marks

Depicted in figure $1,$ is a truss subjected to loads at B$,$C$,$D and pin supported at A and G$.$

a$)$ Determine the force in members BC$,$ CF$,$ and FE$.[6]$

b$)$ State if the members are in tension or compression. $[3]$

c$)$ In figure $2$ the pin joint at A was moved to joint $B.$ Identify any zero$-$force members. $[3]$