A figure skater initially spins with her hands extended at radius from the rotation axis

PHYSICS · Subjective · AP · Physics 1: Algebra-based · Energy and Momentum of Rotating Systems · Energy and Momentum of Rotating Systems

Problem

A figure skater initially spins with her hands extended at radius

0.65\,\text{m}

from the rotation axis. She then pulls her hands in to a radius of

0.30\,\text{m}

, and her angular speed triples. Describe qualitatively how the linear speed of her hands changes and explain why.