1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

How accurate are Newton's formulas concerning Gravity, and other questions

  1. Jul 10, 2009 #1
    Binary System

    Fg = G M1M2 / r2 M1d1 = M1d2

    I don't have non-binary gravity formulas, so if you know any post them here (or any other algebraic gravity formulas you may be aware of)

    I am interested in algebriac formulas that define gravity and energy, but I am a bit skeptical and not always sure which formulas I can trust.

    Other than being for a binary system, does Fg = G M1M2 / r2 have any constraints, assumptions, limitations, or contradictions (problems)?
     
  2. jcsd
  3. Jul 10, 2009 #2

    A.T.

    User Avatar
    Science Advisor
    Gold Member

  4. Jul 10, 2009 #3
    thanks A.T. ... from your link, and following the links on tied link pages I found the equations:

    g = - GM / [D^2 (1 - 2 GM / (rC^2))]; and

    g = - MG hat r / r^2


    these are the types of gravity equations I'm looking for, and any others are greatly appreciated, should anyone know any that are also in algebraic form
     
  5. Jul 10, 2009 #4
    try kepler
     
  6. Jul 10, 2009 #5
    check out MOND on wiki , not that i agree
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: How accurate are Newton's formulas concerning Gravity, and other questions
Loading...