State the inverse square law of force in gravitation.

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Solution

Newton's law of gravitation is also known as the inverse square law.
It states that every particle of matter in the universe attracts every other particle with a force that varies directly as the product of the masses of two particles and inversely as the square of the distance between them.
$G r a v i t a t i o n a l f o r c e, M_{1} \to M a s s o f 1^{s t} b o d y M_{2} \to M a s s o f 2^{n d} b o d y R \to D i s \tan c e b e t w e e n b o t h t h e b o d i e s F α \frac{M_{1} \times M_{2}}{R^{2}} o r F = G \times \frac{M_{1} \times M_{2}}{R^{2}} w h e r e, G \to U n i v e r s a l g r a v i t a t i o n a l c o n s \tan t$
3. The value of G is $6.67 \times 10^{- 11} N m^{2} k g^{- 2}$ .

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