Calculate Newton's Law Force to Keep Moon in Orbit

[etSahcs12]

Homework Statement

The mass of the moon is 7.35 x 10^22 kg and its distance from the Earth is 3.84 x 10^5 km. Taking Earth's mass to be 5.98 x 10^24, calculate what Newton called "the force resquisite to keep the moon in her orb."

mass of moon = 7.35 x 10^22 kg
distance from earth= 3.84 x 10^5 km
Earth's mass = 5.98 x 10^24

The Attempt at a Solution

First of all, i would like to know what Newton called "the force resquisite to keep the moon in her orb." means. Then maybe i will be able to figure out what the question is asking.

 

[Bob Loblaw]

Force=Gravitational constant*mass of the Earth*Mass of the moon/distance between them, squared.

I think this is the force in question.