# Gravitation ( Key Points )

Updated: Jul 21, 2020

**1. The term Gravity is derived from the Latin word gravitas, meaning "weight".**

**2. The Gravitational Force is directly proportional to the mass of the two objects and inversely proportional to the distance between the two objects.**

**3. According to the Universal Law of Gravitation, which was proposed by Newton, each object in the Universe attracts every other object no matter how light or heavy it may be.**

**4. Each spherical body behaves as if all its mass is concentrated at the its center.**

**5. Gravitational force is the weakest of all four fundamental forces found in nature.**

**6. Gravity of the Earth is defined as the force with which the Earth attracts all the bodies towards itself.**

**7. The value of the Gravitational Constant(G) is 0.0000000000667 Nm^2/Kg^2.**

**8. The value of Acceleration due to Gravity(g) is 9.8 m/s^2.**

**9. A body is said to be in Free Fall when the only force acting on the object is Gravitational Force.**

**10. Mass of a body is defined as the measure of its Inertia. Mass is always(generally) constant whether a person is standing on the Earth or on the Moon.**

**11. Weight is defined as the Force with which a body is attracted towards the Earth.**

**12. Weight varies from place to place and increases with an increase in the Gravity.**