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Question -

Why is the weight of an object on the moon th  its weight on the earth?



Answer -

Let ME be the mass of the Earth and m be an object on the surface of the Earth. Let RE be the radius of the Earth. According to the universal law of gravitation, weight WE of the object on the surface of the Earth is given by,

Let and be the mass and radius of the moon. Then,according to the universal law of gravitation, weight WM of the object on thesurface of the moon is given by:
Therefore, weight of an object on the moon is of its weight on the Earth.

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