College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Someone is standing on a frictionless platform that is rotating at 2.1 revolutions per second. In each of their outstretched arms they are holding a weight. The moment of inertia of the system is 8kg·m^2. When they pull the weights in their moment of inertia decreases to 3.9kg·m^2.
What is the final angular speed?
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