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A block of mass 1 slides down a curved t...

A block of mass 1 slides down a curved track that is one quadrant of a circle of radius 1m. Its speed at the bottom is 2m/s. The work done by frictional force is:

A

8j

B

`-8J`

C

`4J`

D

`-4J`

Text Solution

Verified by Experts

The correct Answer is:
B
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