Homework Help: Physics

Posted by Ellie on Friday, September 21, 2012 at 8:32pm.

The Earth has a mass of 5.97 x10^24 kg and the Moon has a mass of 7.36 x10^22kg. The average distance between the center of the Earth and the center of the moon is 3.84 x10^8m.
(a) How far away would the Moon need to be for the magnitude of the gravitational force acting on it due to the Earth be the same as the magnitude of the gravitational force of a 72kg student sitting at their desk on the surface of the earth?

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