- #1

- 32

- 0

## Homework Statement

If the Earth, with a radius of 6400 km, were collapsed into a sphere of the same mass, having a radius of 10 km, what would be its rotational period?

## Homework Equations

L = Iw

## The Attempt at a Solution

I can solve this if the moment of inertia is given but since it isn't I was wondering if there is a way to solve it without knowing the moment of inertia.