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Homework Help: Calculate the net force on the central charge

  1. Nov 14, 2008 #1
    1. The problem statement, all variables and given/known data
    A square of side 1cm has a charge of q= 1uC at its center. The four vertices of the square have charges distributed equally. Calculate the net force on the central charge.
    A. Find the distance from the central charge to the equidistant charges
    B. Find the force of interaction between the central charge and one of the charges at the vertices
    C. Find the magnitude of the net force on the central charge.

    2. Relevant equations


    3. The attempt at a solution
    A. I found the distance ((2)^1/2)/(2) to be right
    B. F= (9*10^9)(1*10^-3C)(1*10^-6C)/(.014m)^2 <--- is this correct?

    C. How do you find this?
  2. jcsd
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