A mass m = 3.9 kg hangs from a massless string wrapped around a uniform cylinder with mass Mp = 10.53 and radius R= 0.96 m. The cylinder has a frictionless pivot in the center. The mass is released from rest and falls downwards unwinding the string from the outside of the cylinder.

What is the rotational inertia of the cylinder, and how fast is the mass moving after it has fallen a distance of 7.56 m.?