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Homework Help: Electrostatic Pressure

  1. Feb 8, 2008 #1
    1. The problem statement, all variables and given/known data
    We are told to consider a thin uniform metallic sphere carrying a charge Q. First we found the electrostatic energy of the electric field E and now we are told to find the electrostatic pressure on the sphere from this.


    2. Relevant equations



    3. The attempt at a solution
    We are told not to use the sigma^2 /2*epsilon_0 formula.

    For my energy I got Q^2/(8pi*epsilon*R). How do I turn this into a electrostatic pressure? Do I go about it using the diagonal elements of the maxwell stress tensor?

    Sorry for lack of more work, but I am COMPLETELY jammed up on this and don't really have more than this. I just need a point in the right direction to get me moving on this.

    Thanks
     
    Last edited: Feb 8, 2008
  2. jcsd
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