# The work done to raise a mass m from the surface of the earth to a height h, which is equal to the radius of the earth

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The work done to raise a mass m from the surface of the earth to a height h, which is equal to the radius of the earth, is:

(1) mgR

(2) 2 mgR

(3) 1/2 mgR

(4) 3/2 mgR

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Gravitation, variation in acceleration due to gravity in changing height and depth