The **gravitational force** is a **force** that attracts any two objects with mass. We call the **gravitational force** attractive because it always tries to **pull** masses together, it never pushes them apart.

Newton’s Universal Law of Gravitation: According to Newton’s Universal Law of Gravitation, force of gravitational attraction is

- Directly proportional to the product of their masses
- Inversely proportional to the square of distance between them

If M1 & M2 are masses of two bodies and r is the distance between them, from above two conditions we get the following relation between Gravitational force, masses and distance between the masses. Here G is Newton's Universal Gravitational constant whose value is 6.67x10 power -11 which means If two masses of 1kg each are separated by a distance of 1 meter then the force of gravitation between them will be 6.67x10 power -11N.

*Gravity* is the *force* by which a
planet or other body draws objects toward its center. The *force of gravity* keeps all of
the planets in orbit around the sun.

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