Universal Law of Gravitation Video Lessons

Concept

# Problem: The force of gravity is an inverse square law. This means that, if you double the distance between two large masses, the gravitational force between them A) also doubles. B) strengthens by a factor of 4. C) weakens by a factor of 4. D) weakens by a factor of 2.

###### FREE Expert Solution

Gravitational force:

$\overline{){\mathbf{F}}{\mathbf{=}}\frac{\mathbf{G}{\mathbf{M}}_{\mathbf{1}}{\mathbf{M}}_{\mathbf{2}}}{{\mathbf{R}}^{\mathbf{2}}}}$

If we double R, the force will be inversely proportional to 4R2

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###### Problem Details

The force of gravity is an inverse square law. This means that, if you double the distance between two large masses, the gravitational force between them

A) also doubles.

B) strengthens by a factor of 4.

C) weakens by a factor of 4.

D) weakens by a factor of 2.