If only two members form a truss joint and no external load or support reaction is applied to the joint, the members

The beam shown in the figure is hinged at one end and rested on a roller at the other end. The free body diagram of the system is

A trapezium has vertices marked as P, Q, R and S (in that order anticlockwise). The side PQ is parallel to side SR. Further, it is given that, PQ = 11 cm, QR...