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G Force derived from G potential

  1. May 16, 2015 #1
    Have just started to learn general relativity. But I am encountering a problem.
    The formula
    Fgrav= -m ∇ φ (xB)
    represents the gravitational force derived form potential.
    Here, xB is B position, and φ(x) is the gravitational potential produced by A.
    But I cant just understand the formula and what is ∇ in here.
    Please help...
     
  2. jcsd
  3. May 16, 2015 #2
    The differential form of the law of gravitational potential is ∇2 Φ=4πGμ. What does it mean along with all its symbols. Comprehensive answer required.
     
  4. May 16, 2015 #3

    Orodruin

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    ∇ is the nabla operator which may be used to write gradients, divergences and curls. If you have problems with this you should probably study vector and tensor analysis before trying GR.
     
  5. May 16, 2015 #4
    May I have a rough knowledge about it, sir?
     
  6. May 16, 2015 #5

    Orodruin

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    This is not something to learn through an internet forum. I suggest you study a basic textbook on vector analysis and ask if you have specific questions.
     
  7. May 16, 2015 #6

    Dale

    Staff: Mentor

    What is your background regarding partial differential equations and vectors?
     
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