Question

A uniform steel beam of length  and mass  is attached via a hinge to the side of a building. The beam is supported by a steel cable attached to the end of the beam at an angle , as shown. Through the hinge, the wall exerts an unknown force, , on the beam. A workman of mass  sits eating lunch a distance  from the building.

Part A
Find , the tension in the cable. Remember to account for all the forces in the problem

Part B

Find , the x-component of the force exerted by the wall on the beam ( ), using the axis shown. Remember to pay attention to the direction that the wall exerts the force.