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Course: AP®︎/College Physics 1 > Unit 3

Lesson 4: Gravitational fields and acceleration due to gravity on different planets
Science
AP®︎/College Physics 1
Circular motion and gravitation
Gravitational fields and acceleration due to gravity on different planets
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Gravitational fields and acceleration on different planets

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Problem

A planet of radius R and mass M has a small moon with an orbital path as shown. At the three points A, B, and C, the small moon is a distance of 1R, 2R, and 5R, respectively, from the surface of the planet.
Determine the gravitational field strength at point B, gB, in terms of the gravitational field strength at point A, gA.
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