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Homework Help: Irodov 3.69 problem

  1. Aug 5, 2006 #1
    A metal ball or radius R=1.5[cm] has a charge q=10e-6[C]. Find the modulus of the vector of the resultant force acting on a charge located on one half of the ball.

    I found a solution on http://irodov.nm.ru/3/resh/3_69.gif but I don't understand explanations regardind to the problem so I would appreciate if anyone could explain a solution.
  2. jcsd
  3. Aug 5, 2006 #2


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    You need to show your work before you get help.

    Which part of the solution are you stuck in?
  4. Aug 5, 2006 #3
    The whole problem is a little bit fuzzy to me (E', Eokp, E and relations between them), so it would be very helpful if you could explain main steps in solving this problem (without doing integration, just basic steps and formulae).

  5. Aug 6, 2006 #4

    Meir Achuz

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    Last edited: Aug 6, 2006
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