Meriam, Kraige & Bolton — Kinetics of Particles: Problem 3_89

3/89 The 4-kg ball and the attached light rod rotate in the vertical plane about the fixed axis at O. If the assembly is released from rest at \(\theta = 0\) and moves under the action of the 60-N force, which is maintained normal to the rod, determine the velocity \(v\) of the ball as \(\theta\) approaches 90°. Treat the ball as a particle.