Find the inclination $\phi$ of OM with the vertical when the system is in equilibrium.

Question

A homogeneous ball of weight Q and radius 'a' as well as weight P are suspended by cords from a point O as shown in Fig. 5. The distance OM is b. Find the inclination $\phi$ of OM with the vertical when the system is in equilibrium. 

Answer 1

Given a homogeneous ball of weight Q of radii 'a',