# Find mass of mars given period of moon orbit and radius of orbit

## Homework Statement

Given data: A moon of mars orbits with a period of 459 minutes. The radius of the moon's orbit is 9.4x10^6 m. What is the mass of mars?

## The Attempt at a Solution

The only relevant equation I could find was Fmars on moon= (G*m1*m2)/(r2)

I have the radius, but to solve I would need the mass of the moon and the gravitational force. Could I use F=mv2/r ? Or how about v= $$\sqrt{}GM/r$$ ?

v= $$\sqrt{}Gm/r$$ and v=$$\omega$$*r