Meriam, Kraige & Bolton — Kinetics of Particles: Problem 3_136

3/136 When the 10-lb plunger is released from rest in its vertical guide at \(\theta = 0\), each spring of stiffness \(k = 20 \text{ lb/in.}\) is uncompressed. The links are free to slide through their pivoted collars and compress their springs. Calculate the velocity \(v\) of the plunger when the position \(\theta = 30^\circ\) is passed.