Question

what is universal law of gravitation​

Answer 1

Answer:

any two particles of matter attract each other with a force

Answer 2

Answer

The universal law of gravitation was discovered by Newton.

The universal law of gravitation states that,

$\leadsto$ The force of attraction between two particles is proportional to the product of their masses and inversely proportional to the square of the distance between them.

Consider two particles A and B of masses m and M.

Let r be the distance between their centres and F be the force of attraction between them

According to universal law of gravitation.

F ∞ mM and F ∝ r²

that is,

$\sf F \propto \dfrac{Mm}{ {r}^{2} }$

In other words,

$\sf F = \dfrac{GMm}{ {r}^{2} }$

Here, G is the universal Gravitational constant.

• Its magnitude is G = 6.67 × 10¹¹ Nm²/kg²
• It's dimensional formula is M¯¹L³T¯²