A Bucket of Water with Total Mass 23 Kg Is

Multiple Choice

A bucket of water with total mass 23 kg is attached to a rope,which in turn is wound around a 0.050-m radius cylinder at the top of a well.The bucket is raised to the top of the well and released.The bucket is moving with a speed of 8.0 m/s upon hitting the water surface in the well.What is the angular speed of the cylinder at this instant?

A) 39 rad/s
B) 79 rad/s
C) 120 rad/s
D) 160 rad/s