Asked by stephanie
A figure skater is spinning at a rate of 1.7 rev/s with her arms outstretched. She then draws her arms in to her chest, reducing her rotational inertia to 62% of its original value. What is her new rate of rotation?
Answers
Answered by
Damon
The angular momentum does not change
original rate of rotation times original rotational inertia
=
final rate of rotation times final rotational inertia
original rate of rotation times original rotational inertia
=
final rate of rotation times final rotational inertia
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