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9.8 m/s^2

  1. May 8, 2015 #1
    Is there something in General Relativity whose value is 9.8 m/s2 at the surface of the Earth?
  2. jcsd
  3. May 8, 2015 #2


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    Yes. The proper acceleration of the surface.
  4. May 8, 2015 #3


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    The acceleration of the stationary observer in the spherically symmetric vacuum according to GR is ##a=\frac{m}{r^2\sqrt{1-2m/r}}## (up to a sign).

    If ##r>>m## this is very close to Newtons value.
  5. May 8, 2015 #4
    Thank you, Orodruin and Mentz114. I may be back with another question.
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