Self$-$Graded Problem

A truss structure is given below. It is pin supported at point A and supported by rollers at points $C$ and $N.$

For the given truss system, find zero force members.

Apply the method of joints at $D$ to find member forces for $PD$ and $DE.$

Apply the method of joints at $Q$ to find member forces for $PQ$ and $P$

Apply the method of sections to find member forces for WR$,$ WF$,$ and EF$.$

$31$

$31$

Figure is not to scale.