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How far away from the surface of the earth do we have to be so that...

How far away from the surface of the earth do we have to be so that the value of g (acceleration due to gravity) is reduced to 4% of its value on the surface of the earth? The radius of the Earth is 6400 km.

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Answer #1

variation of acceleration due to gravity with height is given as

gh= acceleration due to gravity at height h

g= acceleration due to gravity at the surface of earth

now, it is given as

putting this value in the equation

above the surface of the earth

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