The assembly consists of two slender rods each of weight W_r and a disk of weight Wd. If the spring is unstretched when θ = θ₁ and the assembly is released from rest at this position, determine the angular velocity of rod AB at the instant θ = 0. The disk rolls without slipping. Solve using the conservation of energy.

Transcribed Image Text:

Given: W, = 15 lb Wd = 20 lb 0₁ = 45 k = 4 lb ft L = 3 ft deg 45 deg r = 1 ft