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Elastic Potential Energy

A small block...

Question

A small block of mass m is pulled by a light rope on a quarter circular track, having radius R. If force applied on the rope is F, then the work done by the force till the block reaches from A to B is-

A

F R

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B

F R \sqrt{2}

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C

F 2 π R

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D

zero

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Solution

The correct option is A $F R$
Therefore option 'A' is correct

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