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Hello, can anyone help me with this formula?

  1. Jul 27, 2008 #1
    kE=gzE=mv²/2, pE=mgh, F=GM m/r² and F=kqı, q2/d²

    Anyone knows or familiar about this formula?
    Do you know how to proof this formula??

    Thank you^^

    p/s: For not to make anyone confuse, this is not my homework :)
  2. jcsd
  3. Jul 27, 2008 #2

    Doc Al

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    Staff: Mentor

    Looks like you have several formulas listed: Kinetic energy (what's gzE?), potential energy, Newton's law of gravity, and Coulomb's law. Do you have a specific question about any of those?
  4. Jul 27, 2008 #3
    No , there is no specific questions. What you just need is to proof this formula.

    Original Q:
    kE=gzE=mv²/2, pE=mgh, General Gravitiy??(is there any of this?) F=GM m/r² and F=kqı, q2/d²
    Proof this formula. (@@)

    In my opinions,
    kE=gzE=mv²/2, pE=mgh, ( proof that these equations is equals to each other) by using this F=GM m/r² and F=kqı, q2/d² (i guess) I am not sure@@
  5. Jul 27, 2008 #4
    you are true
    but i think newton's law[tex]F=ma[/tex] and [tex]F=Gm_1m_2/R^2[/tex] => that formula
    formula [tex]F=Kq^2/R^2[/tex] was proofed by Coulomb by assay
  6. Jul 27, 2008 #5


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    Staff Emeritus
    Science Advisor

    But as the Doc says, you have written down several, different equations: it is not one formula that can be proven.

  7. Jul 27, 2008 #6
    hmmmmmm.. i will try to study back the question again. And see if they really listed which is which^^.

    But, if you all can give some more clues, it will help alot.

    Thank you again.
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