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## Homework Statement

A satellite is orbiting the Earth in a stable orbit of which the radius is twice that of the Earth. Find the ratio of the satellites cepripetal acceleration to

*g*on the Earth's surface.

## Homework Equations

centripetal acceleration = (v^2)/r or (4rpi^2)/T^2

## The Attempt at a Solution

Well the only thing i can figure is the rafius of the satellite which is 12.8x10^6

Otherwise I have no idea where to start :(