Planet A has twice the mass of Planet B. From this information, what can we conclude about the acceleration due to gravity at the surface of Planet A compared to that at the surface of Planet B?

Question

Physics

Ruth Lawson

13 December, 03:27

Planet A has twice the mass of Planet B. From this information, what can we conclude about the acceleration due to gravity at the surface of Planet A compared to that at the surface of Planet B?

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Answers (1)

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Brian Russo · Answer 1

We cannot conclude anything about the acceleration due to gravity on Planet A without knowing the radii of the two planets.

Explanation:

This is so because

acceleration due to gravity (g) = Gm/r²

Where G = Newton's gravitational constant

= 6.67 x 10-11 N * m2 / kg2.

m = mass of the planet (in kg)

r = radius of the planet (in m)