Gravity, in mechanics, the universal force of attraction acting between all matter.

Newton’s Law of Universal Gravitation states that every point mass attracts every other point mass in the universe by a force pointing in a straight line between the centers of mass of both points, and this force is proportional to the masses of the objects and inversely proportional to their separation.

The SI unit for gravitational force is Newton (N).

**Formula to calculate gravitational force.**

**Example:**

Suppose two satellites are 100 m apart and their masses 300 kg and 20 kg. Calculate the magnitude of the force of gravity between these satellites.

Therefore, the gravitational force between the two satellites is 4.002 x 10^-11.