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.
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 :(