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A solid sphere is thrown up a rough incl...

A solid sphere is thrown up a rough incline. The sphere rolls up without slipping and eventually comes down rolling without slipping. The direction of rolling friction in upward and downward motion respectively is

A

Downward, upward

B

Upward, downward

C

Downward, downward

D

Upward, upward

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The correct Answer is:
D
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