The 0.5-lb ball guided along the vertical circular path r=2rccos
The 0.5-lb ball is guided along the vertical circular path r=2rccos using the arm OA.
If the arm has an angular velocity = 0.4rad/s and an angular acceleration ¨ = 0.8rad/s2 at the instant = 30, determine the force of the arm on the ball. Neglect friction and the size of the ball. Set rc = 0.4ft.