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Homework Help: Finding the force given the mass and radius.

  1. Sep 29, 2012 #1


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    The attachment shows my approach to this problem, however, the answer is incorrect.

    can anyone explain to me how i should be thinking of this problem?

    Attached Files:

  2. jcsd
  3. Sep 30, 2012 #2


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    Staff Emeritus
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    Hello ilc. Welcome to PF!

    Draw a free body diagram for the roller-coaster car.

    There are two forces acting in the car.

    You only accounted for one of them.
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