A solid led sphere of radius 10m has a mass of about 57 million kg. If two of these spheres are floating in deep space with their centers 20m apart, the gravitational attraction between them is only 540N. How large would this gravitational force be if the distance between the centers was tripled?
Gm1m2 / d^2
The Attempt at a Solution
This is starting to piss me off.
(G x 57,000,000^2) / 40^2 ≠ 540. It's not even close!