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When a rigid sphere is projected horizon...

When a rigid sphere is projected horizontally with an initial linear velocity over a uniformly rough horizontal floor

A

the kinetic energy of the sphere remains constant throughout the motion

B

the kinetic energy of translation is slowly shared by rotation, but the total kinetic energy decreases initially and finally attains a constant value

C

the total kinetic energy of the sphere decreases continuously on doing work against friction and finally reduces to zero

D

a constant frictional force, opposite to the translation motion acts on the sphere through out its motion

Text Solution

Verified by Experts

The correct Answer is:
B
Total K.E. decreases due to negative work done by friction.
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