A Figure Skater Rotating at 5

question 12

Multiple Choice

A figure skater rotating at 5.00 rad/s with arms extended has a moment of inertia of 2.25 kg∙m². If the arms are pulled in so the moment of inertia decreases to 1.80 kg∙m², what is the final angular speed?

• A)2.25 rad/s
• B)4.60 rad/s
• C)6.25 rad/s
• D)1.76 rad/s
• E)0.81 rad/s

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Definitions:

Gly

Glycine, the simplest amino acid, with the chemical formula NH2CH2COOH.

Glycine

The simplest amino acid, with the chemical formula NH2CH2COOH, involved in protein synthesis.

Lys

Short for Lysine, an essential amino acid important for protein synthesis and various metabolic processes in the body.

Lysine

An essential amino acid required by the human body for growth and tissue repair, not synthesized by the body and must be obtained from the diet.