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Gravitational field
A region in space where a mass experience gravitational force
Centre of mass
The point which the total mass of the object concentration
Newton’s law of gravitation
Any two points masses interact with each other with a force that is directly proportional to the product of their masses and inversely proportional to the square of their separation.
Inverse square law
The intensity of a physical quantity is inversely proportional to the distance2
Gravitational field strength
The gravitational force per unit mass of a small object near the surface of earth.
Gravitational potential
Work done per unit mass in bringing a small mass test from infinity to the point
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