QUESTION $2$

The loaded truss system shown in Figure $Q^2$ is pin$-$supported at joint A and supported on a roller

at joint M$.$

a$)$ Determine the support reactions A and $M.$

b$)$ Identify the zero force members in the truss.

c$)$ Determine the forces in members GF$,$ GI$,$ FI$,$ JL and LM$.$ Indicate in each case whether the

member force is tensile or compressive.