A 0.50 m long, uniform cylinder with a mass of 0.75 kg and radius 0.10 m is on a frictionless axle. A light cord wrapped around its center runs over a pulley to a 1.40 kg hanging mass below.
The pulley is also on a frictionless axle and is a disc which has a mass of 0.20 kg and radius 0.05
m. If the system was held at rest and then released, how fast is the hanging mass moving after it
has fallen a total distance of 0.50 m? (Assume that the cord does not slip on either surface and is
always tight.)