Special Relativity states that a clock orbiting Earth will tick slower than one on the surface of Earth. General Relativity states the opposite - a clock will tick faster the further it is from a mass. Is there then a critical radius where these two effects cancel out? Ignore the rotation of Earth for this problem. State the radius in terms of r(adsbygoogle = window.adsbygoogle || []).push({}); _{c}=kr_{E}, where k is the number to be determined and where r_{E}is the radius of the Earth.

-This was the extra credit problem on my Relativity final which I really wish I could have solved. Anybody want to take a shot at it?

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# Critical Radius of Special and General Relativity Effects on a Clock Orbiting Earth

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