# Gravity Moon and Earth

**Classical Mechanics**Level 2

An astronaut measures the acceleration due to gravity on the moon and finds it to be 1/6th that on the earth.

He knows that the Earth is about 80 times more massive than the moon. His estimate of the radius of the earth as compared to that of moon is ** _______**?

DETAILS AND ASSUMPTIONS:

1) Answer in terms of R (of the Earth)/ R (of the moon)

**Your answer seems reasonable.**Find out if you're right!

Sign up to access problem solutions.

**That seems reasonable.**Find out if you're right!

Already have an account? Log in here.