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Two masses, mA = 32.0 kg and mB = 41.0 kg are connected by a rope...

Two masses, mA = 32.0 kg and mB = 41.0 kg are connected by a rope that hangs over a pulley (as in the figure(Figure 1)). The pulley is a uniform cylinder of radius R = 0.316 m and mass 3.4 kg . Initially, mA is on the ground and mB rests 2.5 m above the ground. a.If the system is now released, use conservation of energy to determine the speed of mB just before it strikes the ground. Assume the pulley is frictionless and that the rope does not slip. The moment of intertia of the pulley is .5MR2 , where M is the mass of the pulley. b.What is the kinetic energy of the pulley just before the 41.0 kg  mass hits the ground?

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