A solid cylinder has a total mass,M, of 98 kg. It has an outer radius,R, of .98 meters and an inner radius,r, of .09 meters. A string is attached to the center of the cylinder which a cat is holding on. The cat has a mass of 75 kg and is descending to the ground with an initial height of 12 meters. Determine the velocity of the cat when (y=0) in m/s.

Make sure to solve for velocity when y=0 and not when y=12

Please show the solution step by step.