Question

to show universal law of Gravitation

Answer 1

Newton's law of universal gravitation states that a particle attracts every other power particle in the universe using a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

Answer 2

Ever thought why everything that goes up always comes down?
If yes then Law of Gravitation can describe why this happens.
According to Newton's law of Gravitation, the force of "Attraction" between two bodies is directly proportional to product of masses of them and inversely proportional to square of the distance from their centre only for a "Uniformly distributed system".
Mathematically-

F= G.m1.m2÷r²
where G= Universal Gravitation constant.

Cavendish's Method can be used to find the value of G.