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Image charges

  1. Jun 10, 2013 #1
    Hi,

    I'm trying to use image charges to find the force that apply on the following particle (on the attachment) , but it seems that I do something wrong -
    [itex]F=2q^2/(2a^2)-2cos(60)q^2/a^2[/itex]
    The gray section have 0 potential, so I've tried to put image charges like it is in the second attachment file.
    Can someone help me?

    Thanks,
    Adam
     

    Attached Files:

  2. jcsd
  3. Jun 10, 2013 #2
    Graphics can help. But you must descript all the letters significance.¡¡¡ We are physics, not engineerings
     
  4. Jun 10, 2013 #3
    Sorry...
    The upper and the lower charges are negative while the two middles are positive.
     
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