Question

State and explain Newtons law of gravitational force.

Answer 1

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

$F\propto M_1{M}_2$ [$M_1$ and $M_2$ are the respective masses of the two bodies]

$F\propto \frac{1}{r^2}$

$\therefore F\propto \frac{M_1{M}_2}{r^2}$

or $F=\frac{{GM}_1{M}_2}{r^2}$ [G= Constant of proportion=Gravitation constant]