A Hollow Cylinder of Mass M and Radius R Rolls

A hollow cylinder of mass M and radius R rolls down an inclined plane. A block of mass M easily slides down an identical inclined plane. Complete the following statement: If both objects are released at the same time from the top of their inclined planes,

A) the cylinder will reach the bottom first.
B) the block will reach the bottom first.
C) the block will reach the bottom with the greater kinetic energy.
D) the cylinder will reach the bottom with the greater kinetic energy.
E) both the block and the cylinder will reach the bottom at the same time.

Correct Answer:

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