An iron ball of mass 220kg is suspended from the end of a rigid steel girder. The girder has a mass of 180kg and a length of 2.4m. The girder is pivoted to a rigid upright. A steel wire is attached 1.6m along the girder. It holds it in equilibrium with angles between component as shown in the diagram.
a). Identify all the forces acting on the girder by drawing them on the diagram.
b). Demonstrate by calculation that the tension in the steel wire is 5390N
c). If the tension in the steel wire is 5390N, calculate the magnitude and direction of the reaction force from the pivot acting on the steel girder.
F = ma
T = rF
Ʃ = 0
The Attempt at a Solution
I have absolutely no idea how to even attempt this question, I just don't know where to start.