Two rods AC and CE are connected by a pin at C and by a spring AE. The constant of the spr...

Two rods AC and CE are connected by a pin at C and by a spring AE. The constant of the spring is 1.5 lb/in., and the spring is unstretched when θ = 30°. Knowing that l = 10 in. and neglecting the weight of the rods, determine the value of θ corresponding to equilibrium when P = 40 lb.

Fig. P10.30