Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Trending News
angular velocity on a system question?
a boy is on the outer edge of a merry-go-round that is spinning frictionlessly. He walks to the inner edge. Does the angular velocity of the system increase or decrease, why?
1 Answer
- 3 years agoFavorite Answer
The angular momentum is conserved when no external torques are applied, and because the boy walking in the system is an internal action there is no torque on the system. But because the boy moving inward reduces the moment of inertia of the system the angular velocity has to increase in order to keep the angular momentum constant.
