Question

State and derive the formula for Newtons universal law of gravitation

(In copy or hand written)​

Answer 1

$\underline\mathfrak{Newtons \: universal \: law \: of \: gravitation}$

Any body in the universe, having mass, attracts another body having mass. This as called universal law of gravitation. The force of attraction "F" is designed as:

$f \infty m1m2 \\ f \infty \frac{1}{ {r}^{2} }$

m1,m2 are the masses of object. R is distance between them.

$f \infty \frac{m1m2}{ {r}^{2} } \\ = f = \frac{gm1m2}{ {r}^{2} }$

S.I unit is Newton (N).

The value of G was accidentally calculated by cassendish as

$g = 6.674 \times {10}^{ - 11} {kg}^{ - 1} {sec}^{ - 2}$