List of top Applied Mechanics and Design Questions on Trusses and frames asked in GATE ME

The lengths of members BC and CE in the frame shown in the figure are equal. All the members are rigid and lightweight, and the friction at the joints is negligible. Two forces of magnitude $Q>0$ are applied as shown, each at the mid-length of the respective member on which it acts. Which one or more of the following members do not carry any load (force)?

A plane truss PQRS (PQ = RS, and \( \angle PQR = 90^\circ \)) is shown in the figure. The forces in the members PR and RS, respectively, are \(\underline{\hspace{2cm}}\)