Question
Saturn has a radius of about 9.0 earth radii, and a mass 95 times the Earth’s mass. Estimate the gravitational field on the surface of Saturn compared to that on the Earth
Answers
Damon
F = G m M/R^2
F/m = local g = G M/R^2
F/m earth = G Me/Re^2
F/m saturn = G 95Me/81Re^2 = (95/81) G Me/Re^2
so 95/81 times that on earth
F/m = local g = G M/R^2
F/m earth = G Me/Re^2
F/m saturn = G 95Me/81Re^2 = (95/81) G Me/Re^2
so 95/81 times that on earth