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the gravitational acceleration on the surface of a planet (of mass M and radius R) is...

the gravitational acceleration on the surface of a planet (of mass M and radius R) is g. what is the gravitational acceleration at a point 2R above the surface of the planet?

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Answer #1

Gravitational constant = G

Mass of the planet = M

Radius of the planet = R

Gravitational acceleration at the surface of the planet = g

Distance of the point from the surface of the planet = H = 2R

Distance of the point from the center of the planet = R1

R1 = R + H

R1 = R + 2R

R1 = 3R

Gravitational acceleration at a point 2R above the surface of the planet = g1

Gravitational acceleration at a point 2R above the surface of the planet = g/9

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