Question Detail
Question
A figure skater goes into a spin, keeping her arms at her sides. When she extends her arms, ...
Correct Answer
Option D is the correct answer.
Detailed Explanation
In the absence of external torque, angular momentum is conserved. When she extends her arms, her rotational inertia increases, so her angular velocity decreases. Angular momentum remains constant.
Hint
Conservation of angular momentum: Iω = constant.