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    Moment of Inertia for Figure Skater

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    A figure skater during her finale can increase her rotation rate from an initial rate of 1.12 revolutions every 1.88 s to a final rate of 3.15 revolutions per second. If her initial moment of inertia was 4.73 kg* m2, what is her final moment of inertia?

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    Solution Preview

    Step 1.
    The conservation law which applies here is: With no external torque applied during an event, angular momentum will not change. Thus final angular momentum must equal initial ...

    Solution Summary

    With clear steps including formulas, calculations and explanation, the problem is solved in three steps of a few lines each.