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A body of mass 1.5 kg is allowed to slid...

A body of mass 1.5 kg is allowed to slide down along a quadrant of a circle from the horizontal position. In reaching to the bottom, Its velocity is 8m/s. The work done in over-coming the friction is 12J. The radius of circle is `(g=10 ms^(-2))`

A

4m

B

3m

C

5m

D

2m

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The correct Answer is:
A
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