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A block is moving on a rough circular tr...

A block is moving on a rough circular track. After the completion of one revolution:

A

Kinetic energy of the block must be greater than the initial kinetic energy.

B

Work done by kinetic friction is negative on ground .

C

Work done by kinetic friction is negative on the block

D

Work done by friction on block is zero

Text Solution

Verified by Experts

The correct Answer is:
C
`W_(f) = -ve`, so it `darr K.E.`
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