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Homework Help: Potential energy problem

  1. Feb 14, 2009 #1
    #8

    1. The problem statement, all variables and given/known data

    A point charge mass of 0.0788kg and q charge= +6.62 uc is supended by a thread between the vertical plates of a parallege capacitor. If the angle of delflectionis 23.7 degress and the seperation between the plates is d= 0.0242m, whats the potential energy?
    2. Relevant equations
    v=w/q


    3. The attempt at a solution
    not sure, where to begin but....
    V= w/q
    w=1/2cv sq
    F= keqq/r
    F= 8.99e9 (6.62e-6)/.0242 sq
     
  2. jcsd
  3. Feb 14, 2009 #2

    LowlyPion

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    Re: #8

    I think you'll need to draw a picture here.
     
  4. Feb 14, 2009 #3
    Re: #8

    i have 2 parallel lines then the distance btw the lines is d= .0242, then a pendulum ball @ an angle
     
  5. Feb 14, 2009 #4

    LowlyPion

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    Re: #8

    What's the length of the pendulum?
     
  6. Feb 14, 2009 #5
    Re: #8

    there isnt it only tells u the angle and the distances btw the 2 parallel lines
     
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