A body of mass 1 kg is moving in a verti...

A body of mass 1 kg is moving in a vertical circular path of radius 1 m. The difference between the kinetic energies at its highest and lowest positions is [take g=10`m//s^2`]

A

20 J

B

10J

C

`4sqrt5J`

D

`10(sqrt5-1)J`

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The correct Answer is:

A

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