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Finding magnitude of electrostatic force

  1. Sep 3, 2015 #1
    1. The problem statement, all variables and given/known data
    Im having trouble posting the image sorry.
    But theres three charges.
    q1=30uC
    q2=?
    q3=60uC
    q1 to q2 distance equals 30cm
    q2 to q3 distance equals 60cm
    q1 is left of q2 and q3 is to the right of q2.

    2. Relevant equations
    F=k*qq/r^2

    3. The attempt at a solution

    Given where q2 is, wouldn't both of the forces that q1 and q3 exerted on q2, be the same?
    So I tried setting their forces equal F(subq12)=F(subq32) and I couldn't figure out what to solve for. Ive tried to look it up in my book,but this just makes it more confusing. Any help or links would be great thanks.
     
  2. jcsd
  3. Sep 3, 2015 #2

    gneill

    User Avatar

    Staff: Mentor

    Hi geryuu11, Welcome to Physics Forums.

    Can you provide a question in the Problem Statement section? As it stands there's no information about what it is you're expected to do with the information given. If this is a homework question, please provide the text of the question.
     
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