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A 45 kg figure skater is spinning on the toes of her skates at 1.0 rev/s...

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Physics

A 45 kg figure skater is spinning on the toes of her skates at1.0 rev/s . Her arms are outstretched as far as they will go. Inthis orientation, the skater can be modeled as a cylindrical torso(40 kg , 20 cm average diameter, 160 cm tall) plus two rod-likearms (2.5 kg each, 69 cm long) attached to the outside of thetorso. The skater then raises her arms straight above her head,where she appears to be a 45 kg, 20-cm-diameter, 200-cm-tallcylinder.

What is her new rotation frequency, in revolutions persecond?

Answer & Explanation Solved by verified expert
4.3 Ratings (792 Votes)
Conservation of Angular Momentum Lfinal Linitial I w final I w initial Where I is the moment of inertia of the object and w is the angular velocity of the object Case 1 body is a cylinder spinning around its central axis radius 01 m mass 40kg The    See Answer
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