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  2. AP Physics 1 Revised
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Conservation of Angular Momentum

Jackson Hernandez

Jackson Hernandez

8 min read

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Study Guide Overview

This AP Physics 1 study guide covers the conservation of angular momentum, including the sum of angular momenta in a system and how changes in angular momentum occur due to external torques. It explains how to select systems for analyzing angular momentum conservation, focusing on scenarios with zero and non-zero external torques. It emphasizes the relationship between torque, angular momentum, and moment of inertia, and how changes in mass distribution affect rotational speed. The guide also includes practice multiple-choice and free-response questions and exam tips.

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Question 1 of 12

A figure skater ๐Ÿ’ƒ is spinning and pulls their arms inward. What happens to their angular speed and moment of inertia?

Angular speed increases, moment of inertia increases

Angular speed decreases, moment of inertia decreases

Angular speed increases, moment of inertia decreases

Angular speed decreases, moment of inertia increases