A heavenly body has a mass equal to half of the mass of the earth and its radius half as that of the earth. If a stone weighs 100 N on the surface of the earth, find the weight of the stone on the heavenly body.
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Explanation:
40 kg
ge=R2GM (Gravitational acceleration of earth)
g′=7R2GM×4 (Gravitational acceleration of planet)
Weight on that planet W′=mg′
=m×7R24GM
=74×R2GMm
=74×mg=74W
=74×70=40kg
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