A bucket of water with total mass 20.0 kg is attached to a rope,which in turn is wound around a 4.00-cm 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 8.00 m/s upon hitting the water surface in the well.What is the angular speed of the cylinder at this instant?
A)64.0 rad/s
B)50.3 rad/s
C)200 rad/s
D)126 rad/s
E)393 rad/s

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The Answer of A bucket of water with total mass 20.0 kg is attached to a rope,which in turn is wound around a 4.00-cm 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 8.00 m/s upon hitting the water surface in the well.What is the angular speed of the cylinder at this instant?
A)64.0 rad/s
B)50.3 rad/s
C)200 rad/s
D)126 rad/s
E)393 rad/s

A Bucket of Water with Total Mass 20