What two factors affect the force of gravity?

Question:- What two factors affect the force of gravity?

Answer:

The only two variables that are capable of changing the force in any way are mass and distance from the centre.

Newton’s law of universal gravitation holds that the force of attraction between two bodies is directly proportional to the product of the masses of the two bodies and is inversely proportional to the square of the distance between the centres of the two bodies. Hence this means that if the mass of one or both objects is increased, the gravitational force between the two also increases. On the other hand, with an increase in the separation between the objects in question, the force of attraction that holds them together reduces exponentially. This relationship makes us feel Earth’s gravity strongly on the surface of the planet while we can feel weightlessness in space. It is also responsible for the magnitude of mass attraction of objects such as stars and even black holes. Knowledge of these factors is important in such areas as astrophysics, engineering and specifically in satellite and space missions where orbits are all important factors.