Mars has a radius of about 0.38 Earth radius and a mass of only 0.11 Earth mass. Estimate the acceleration due to gravity on Mars.

Question

Mars has a radius of about 0.38 Earth radius and a mass of only 0.11 Earth mass.  Estimate the acceleration due to gravity on Mars.

bobpursley · Answer

gmars=.11^2/.38 * 9.8=?

Chanz · Answer

This question is wrong. Mars' GRAVITY is about .38 Earth's. It's radius is about .54 Earth's. So by universal gravitation g = GM/r^2 g = G .11 / (.54 r)^2 = .11/.54^2 *9.8