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Homework Help: Magnetic field - affect on steel ball

  1. Mar 28, 2012 #1
    1. The problem statement, all variables and given/known data
    (see attachment for image)

    A steel ball is released from a ramp and enters at the position marked.
    Draw and explain the paths taken by both balls
    (explain the difference between the paths)

    2. Relevant equations

    3. The attempt at a solution
    So the smaller ball follows a path with a smaller radius than the larger curve
    the larger ball is moving faster BUT how does this explain why the curve is greater (mv2/r is the force needed for the steel ball to move in a circle BUT there surely are not any extra forces supplying the required centripetal acceleration). I would have presumed that frictional forces don't really change as the steel ball is smooth?

    Attached Files:

  2. jcsd
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