Question

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. ​

Answer 1

Answer:

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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