Question: Two masses, mA = 32.0kg and mB = 38.0 kg, are connected by a rope that hangs over a pulley (as in Fig. 8-54). The

Two masses, mA = 32.0kg and mB = 38.0 kg, are connected by a rope that hangs over a pulley (as in Fig. 8-54). The pulley is a uniform cylinder of radius R = 0.311 m and mass 3.1 kg. Initially mA is on the ground and mB rests 2.5 m above the ground. If the system is released, use conservation of energy to determine the speed of mB just before it strikes the ground. Assume the pulley bearing is frictionless.

2.5 m mA

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