A figure skater is spinning with her arms extended. Her rota…
A figure skater is spinning with her arms extended. Her rotational inertia in this position is 2.0 kg·m2. She then pulls her arms close to her body, reducing her rotational inertia to 1.2 kg·m2. If her final angular velocity is 3.0 rev/s, what was her initial angular velocity when her arms were extended?