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Homework Help: Electric force problem

  1. Sep 30, 2012 #1
    1. The problem statement, all variables and given/known data

    http://imageshack.us/a/img145/3799/img0302ok.jpg [Broken]

    2. Relevant equations

    f=k*q1q2/r^2

    3. The attempt at a solution
    i just don't know how to start i just need a hint and i will do the rest
     
    Last edited by a moderator: May 6, 2017
  2. jcsd
  3. Oct 1, 2012 #2

    ehild

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    Homework Helper

    Draw vectors representing the individual forces the other charges exerte on qo. The vector sum of these vectors has to be zero.

    ehild
     
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