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A body of mass m is situated at a distance 4Re above the earth’s surface, where Re is the radius of earth.

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A body of mass m is situated at a distance 4Re above the earth’s surface, where Re is the radius of earth. How much minimum energy be given to the body so that it may escape

(a) mgRe

(b) 2mgRe

(c) mgRe/5

(d) mgRe/16

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1 Answer

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Best answer

Correct option (c) mgRe/5

Explanation

Potential energy of the body at a distance 4Re from the surface of earth 

So minimum energy required to escape the body will be mgRe/5.

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