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Balancing four point charges so that the net force acting on each charge is 0.

  1. Jan 24, 2010 #1
    1. The problem statement, all variables and given/known data

    Find positions of four charges in a plane (+1C, -1C, +2C, -2C) that result in an equilibrium (zero net force on each charge). Report positions as four (x,y) pairs.

    2. Relevant equations

    F = [tex]\frac{k_{e}q_{1}q_{2}}{r^{2}}[/tex]

    3. The attempt at a solution

    I had no idea where to start. It seemed to me that regardless of where I put the charges there would be a net force.
  2. jcsd
  3. Jan 24, 2010 #2
    In your equation of the force between two charges, when does the force tend toward zero?
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