Solved A 1-lb ball A and a 2-lb ball B are mounted on a
A 1-lb ball A and a 2-lb ball B are mounted on a horizontal rod which rotates freely about a vertical shaft. The balls are held in the positions shown by pins where rA = 10.2 in. The pin holding B is suddenly removed and the ball moves to position C as the rod rotates. Neglect friction and the mass of the rod and know that the initial speed of ...