# solve angular speed based on moment of inertia

An ice skater has a moment of inertia of 5.0 kg-m^2 when her arms are outstretched. At this time, she is spinning at 3.0 revolutions per second. If she pulls her arms in, she decreases her moment of inertia to 2.0 kg-m^2. How fast is she spinning then?

Please provide detailed explanation.

https://brainmass.com/physics/angular-momentum/solve-angular-speed-based-moment-inertia-462817

#### Solution Preview

In this question, there is a conservation of angular momentum.

Angular momentum = ...

#### Solution Summary

The solution provides detailed steps how to solve angular speed based on known moment of inertia.

$2.19