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A solid homogeneous sphere is moving on ...

A solid homogeneous sphere is moving on a rough horizontal surface, partly rolling and partly sliding. During the king of motion of the sphere.

A

total kinetic energy is conserved

B

angular momentum of the sphere about the point of contact with the plane is conserved

C

only the rotational kinetic energy about the centre of mass is conserved

D

angular momentum about centre of mass is conversed

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The correct Answer is:
B
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