Surface Gravity on Mars

The surface gravity on a planet can be determined from Newton 's Law of Universal Gravitation:
This says that a planet of mass m1
and radius R
will exert a force on an object (you) of mass m2
So we can relate the force on the surface of Mars to the force on the surface of the Earth.
It will change like: Since Mars has a mass that is 0.11 times the mass of the Earth
and a radius that is 0.53 times the radius of the Earth
we expect the surface gravity to be