What is the dimensional formula of gravitational constant?

Answer 1

Well, let's see:

Force of gravity = G M1 M2 / R2

So G = (force) x (distance)2 / (mass)2 = (M L / T2) x (L2) / (M2) = (M L3) / (M2 T2) =

(Length)3 (Mass)-1(Time)-2