The simple pendulum A of mass mA = 3.7 kg and length / = 1.46 m is suspended from the trolley B of mass mg = 5.1 kg. If the system is released from rest at 0 = 0, determine the velocity VB (positive if to the right, negative if to the left) of the trolley when 0 = 90°. Friction is negligible. Answer: VB = B i m/s
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