On this planet, the mass of the object will be most nearly

label Physics
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A 4 kg object is taken to a planet that has 3 time the mass of earth and 1/2 the radius of earth. On this planet, the mass of the object will be most nearly

A. 12kg

B. 3kg

C. 48kg

D. 4 kg

E. 24 kg

Jan 5th, 2015

C 48 kg

The gravitational force is directly proportional to mass and inversely proportional to the square of the distance from the centre

Hence 4 x 3 x 2² = 48 kg on new planet

Jan 5th, 2015

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Jan 5th, 2015
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Jan 5th, 2015
Jun 27th, 2017
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