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The magnitude of a skater's angular acceleration is described as proportional to her spin rate and her:
ACostume weight
BMoment of inertia
CHeight above ice
DBlade sharpness
Answer & Solution
Correct answer: B. Moment of inertia
1. Two quantities set the angular acceleration.
2. The skater's spin rate is her angular velocity.
3. The magnitude of her angular acceleration would be proportional to her angular velocity.
4. It is also proportional to her moment of inertia about her spin axis.
_Source: OpenStax College Physics for AP Courses 2e (CC BY 4.0), Ch 10 'Rotational Motion and Angular Momentum', sections 10.1-10.7_
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