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Homework Help: Characteristic time sqrt(R_e/g) of Earth's gravity in General Relativity

  1. Apr 22, 2009 #1
    1. The problem statement, all variables and given/known data


    I was looking over a General Relativity paper today, and at the end of a question on Geodesic Deviation, was "Give a brief statement of a physical effect or thought-experiment which illustrates how the time sqrt(R/g) characterises the Earth’s gravity." (R is the radius of the earth)

    2. Relevant equations


    3. The attempt at a solution

    Well, I have been looking through chapters of GR texts on Schwarzchild thought experiments, Bondi thought experiments etc., and can't find anything related to this quantity. Obviously any expression containing g characterises earth's gravity, but I simply don't know what physical effect or thought-experiment the question could be referring to. If anyone could help it would be very much appreciated.

    Thanks a lot.
  2. jcsd
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