- #1
livblue23
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Homework Statement
Communications satellites are placed in orbits such that they rotate the Earth once every 24.0 hours. Determine how high above the Earths surface these satellites must be placed.
Homework Equations
GM/4(3.14 squared) times T squared
The Attempt at a Solution
so i know that first i have to get the radius by using GM/4(3.14 squared) times T squared, and then subract the Earth's radius from that, but what would be the M in that equation?