Question

state the universal law of gravitation and derive the expression​

Answer 1

the Gravitational force of attraction between any tow objectsis directlu proportional to the masses of the particles.and is inversely proportional to the square of the distance between the particles.

F∝Mm

F∝1/r²

∴F∝Mm/r²

F=G.Mm/r²

⇒G=Fr²/Mm

here =universal gravitation constant

G=6.67×10⁻¹¹