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Gravitational Potential

A body of mas...

Question

A body of mass m is taken from earth surface to the height h equal to radius of earth. The increase in potential energy will be

A

mgR

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B

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C

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D

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Solution

The correct option is B

$△ U = \frac{m g h}{1 + \frac{h}{R}} = \frac{1}{2} m g R (∴ h = R)$

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