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Comparing rotating bodies

  1. Aug 29, 2004 #1
    If there are two rigid bodies rotating, (known I) how can you compare their rotation?

    Example:

    If the object of moment of inertia I is spining at x rad/sec, and its I is changed to i, what is the new speed?
     
  2. jcsd
  3. Aug 29, 2004 #2

    Doc Al

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    Staff: Mentor

    Assuming that no external torque has been introduced, angular momentum will be conserved. So [itex]I_1 \omega_1 = I_2 \omega_2[/itex].
     
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