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Gravitational Constant

  1. Apr 11, 2014 #1
    Quick question.... Can the gravitational constant only be used for earth or can it be used in questions regarding other planets?
  2. jcsd
  3. Apr 11, 2014 #2

    Doc Al

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    Staff: Mentor

    Are you talking about G, the constant that appears in Newton's law of Universal Gravity? If so, then yes, it applies generally.

    On the other hand, small g, the acceleration due to gravity, only applies near the earth's surface.
  4. Apr 11, 2014 #3
    Thanks a mil!
    Ya I was talking about G in Newton's Law of Universal Gravity. So I can use G ( 6.67×10−11 N m2/ kg2 ) for all planets. Thank you for your help Doc
  5. Apr 11, 2014 #4


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