A vertical load P is applied at end B of rod BC. The constant

A vertical load P is applied at end B of rod BC. The constant of the spring is k and the spring is unstretched when θ = 0.
(a) Neglecting the weight of the rod, express the angle θ corresponding to the equilibrium position in terms of P, k, and l.
(b) Determine the value of θ corresponding to equilibrium if P = 2kl.



A vertical load P is applied at end B of rod BC. The constant