Newton's law of universal gravitation states that the force between two masses is:
The SI unit of the gravitational constant is:
Gravitational field strength is defined as:
A satellite is any object that:
A geostationary satellite has an orbital period of:
Gravitational potential is defined as:
Gravitational field lines for a point mass:
The natural satellite of Earth is:
Gravitational force is an example of:
If the distance between two masses is doubled, the gravitational force becomes: