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Rate of rotational inertia help

  1. Jun 16, 2009 #1
    I need some help just getting moving on this problem...

    A figure skater is spinning at a rate of 1.6 rev/s with her arms outstretched. She then draws her arms in toward her chest reducing her rotational inertia to 64% of its original value. What is her new rate of rotation??

    I'm not sure how to relate the rate to the inertia...
  2. jcsd
  3. Jun 16, 2009 #2
    angular momentum
  4. Jun 16, 2009 #3


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    What is the equation which defines the angular momentum of a body?
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