Question:
A ballerina spins initially at 1.5 rev/s when her arms are
Last updated: 8/4/2022
![A ballerina spins initially at 1.5 rev/s when her arms are](https://media.kunduz.com/media/sug-question/raw/75729037-1659611482.9052744.jpeg?h=512)
A ballerina spins initially at 1.5 rev/s when her arms are extended. She then draws in her arms to her body and her moment of inertia becomes 0.88 kg · m², and her angular speed increases to 4.0 rev/s. What was her initial moment of inertia?