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Homework Help: What is the magnitude of the charge?

  1. Aug 10, 2012 #1
    Two 1.0g beads are charged equally and placed 50cm apart. When released, they begin to accelerate at 150m/s2. What is the magnitude of the charge on each bead?

    The equations I used:

    F = ma
    F = kQQ / r2

    I was just wondering about the mass. Do I have to use the total mass (2.0g) for both beads or just the 1.0g?
  2. jcsd
  3. Aug 10, 2012 #2


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    Homework Helper

    have a careful think about what object(s) the force(s) act on and the mass of the object(s).
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