Q$.2$ Identify the zero$-$force members, find the reactions at supports $G$ and $A,$ and determine the forces in members AF and BC$.$

Q$.3$

$($a$)$ Identify the zero$-$force members.

$($b$)$ Find the reactions at A and $B.$

$($c$)$ Using the method of sections to determine the force in bar ED$,$ indicate if tension or compression.