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

  • Thread starter haldavidc
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Homework Statement



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.

Homework Equations



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

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.
 

Answers and Replies

  • #2
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In your equation of the force between two charges, when does the force tend toward zero?
 

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