a$)$ If there are any zero force members in the following truss, indicate them.

$(-2)$

b$)$ Determine the force in members GF$,$ CF$,$ and CD and state they are in tension or compression.

$M_A=0=-8(400)$

$Ey=$

$$

$i^{-1}(\frac{6}{8})$

$\mathrm{.}88$