Answer :

Universal Law of Gravitation given by Newton is called Newton’s Law of Gravitation. This law states that, “Every object in the universe attracts every other object with a force which is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.”

Suppose two bodies A and B of mass m_{1} and m_{2} be at distance r from each other.

So, according to Newton’s law of gravitation,

F …..1

And F …..2

Thus, combining equations 1 and 2 we get,

Where, G = Universal Gravitational Constant

G = Nm^{2}kg^{-2}

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