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Q.

Escape velocity of a body of 1 kg mass from the surface of a planet is 100 m/sec. Gravitational potential energy of the body on the surface of the planet is

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a

- 5000J

b

-1000J

c

-2400J

d

5000J

answer is A.

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Detailed Solution

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pE=−12mve2=−12(1)X(100)2=−100002=−5000J

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