Fig. 4.1
A uniform metal beam AB is pivoted on a vertical wall at A. The beam is supported by a wire
joining end B to the wall at C. The beam makes an angle of 30 with the wall and the wire
makes an angle of 60 with the wall.
The beam has length 2.8m and weight of 500 N. A load of 4000N is supported from L. The
tension in the wire is I. The beam is in equilibrium.
(1) By taking moments about A, show that Tis 2.1kN.