What is the weight of a 70 kg body on the surface of a planet whose mass is 1/7th that of earth and rsdiusis half of earth?
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Answer:
40 kg
Explanation:
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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