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Homework Help: Coulomb's Law Theory

  1. Jan 30, 2008 #1
    1. The problem statement, all variables and given/known data

    Suppose you let identical pith balls come in contact to make q1=q2 would the charges be equal if the pith balls were of different size?

    2. Relevant equations


    3. The attempt at a solution

    I would think they wouldn't be, because doesn't the charge require the radii?
  2. jcsd
  3. Jan 30, 2008 #2
    Force requires the distance, which the radius plays into, like your equation shows.

    Charge is charge, though. It just means the charge density is bigger or smaller.
  4. Jan 31, 2008 #3


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    Charge is pretty much locked in place on a pith ball (but not on a conductor).
    Very little charge would be transferred between two pith balls in contact.
    q1 and q2 could take on any value, independent of the radii.
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