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
Chat with our AI personalities
m3 kg-1 s-2.
The units for Rydberg's constant are [L-1].
Cavendish measured the gravitational constant "G".
The gravitational constant was found by Newton, not Einstein.
You measure the gravitational force between two objects - this can be done with a Cavendish balance. Then you plug in the numbers (masses, and force) into the universal formula for gravitation.