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Ratio of masses

  1. Nov 9, 2009 #1
    1. The problem statement, all variables and given/known data
    A CD (radius 6.0 cm) is spinning freely with an angular velocity of 420 rpm when a bug drops onto the CD a distance 4.4 cm from the center. If the CD slows to 280 rpm, what is the ratio of the bug's mass to the mass of the CD? (Ignore the effect of the hole in the center of the CD.)



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Nov 9, 2009 #2

    tiny-tim

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    Hi dorian_stokes! :wink:

    Use conservation of angular momentum …

    what do you get? :smile:
     
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