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Centripetal forces

  1. Nov 26, 2005 #1
    A 40.0 kg child on a Ferris wheel rotates four times each minute and the wheel has a radius of 9.0 m.

    What force does the seat exert on the child when the child is halfway between the top and bottom?

    The answer is 397 N which is 5 N more than the weight of the child, but I have not idea how they got that, anyone have any ideas?
  2. jcsd
  3. Nov 26, 2005 #2


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    HINT: The seat also supplies the centripetal force to keep the child moving in a circular path.
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