Describe how the gravitational force between two objects depends on the distance between them.
The gravitational force F between two bodies of masses M and m kept at a distance d from each other is:
F = G * m * M / d2
The force between two bodies is inversely proportional to the square of the distance between them. That is, F α 1/d2
Therefore, if we double the distance between two bodies, the gravitational force becomes one-fourth and if we halve the distance between two bodies, then the gravitational force becomes four times.