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Be reduced. Remain the same. Be increased. 000

Be reduced. Remain the same. Be increased. 000

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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**Question:** Diving from a high cliff, Cliff begins with a moderate rotational speed. When he pulls his mass inwards, his rotational speed should: - a) Be reduced. - b) Remain the same. - c) Be increased. **Explanation:** This question relates to the concept of angular momentum conservation in physics. When a diver pulls their mass inwards, they reduce their moment of inertia; as a result, to conserve angular momentum, their rotational speed increases. Thus, the correct answer is **c) Be increased**.
Transcribed Image Text:**Question:** Diving from a high cliff, Cliff begins with a moderate rotational speed. When he pulls his mass inwards, his rotational speed should: - a) Be reduced. - b) Remain the same. - c) Be increased. **Explanation:** This question relates to the concept of angular momentum conservation in physics. When a diver pulls their mass inwards, they reduce their moment of inertia; as a result, to conserve angular momentum, their rotational speed increases. Thus, the correct answer is **c) Be increased**.
**Question:** Diving from a high cliff, Cliff begins bent in half (\( I = 4 \, \text{kg m}^2 \)) with a moderate rotational speed of a half rotation per second. During the dive, he tucks his mass inwards (\( I = 0.8 \, \text{kg m}^2 \)); in this position, what rotational speed will he have? **Options:** - a) 0.1 rot/s - b) 0.02 rot/s - c) 0.5 rot/s - d) 2.5 rot/s - e) 12.5 rot/s
Transcribed Image Text:**Question:** Diving from a high cliff, Cliff begins bent in half (\( I = 4 \, \text{kg m}^2 \)) with a moderate rotational speed of a half rotation per second. During the dive, he tucks his mass inwards (\( I = 0.8 \, \text{kg m}^2 \)); in this position, what rotational speed will he have? **Options:** - a) 0.1 rot/s - b) 0.02 rot/s - c) 0.5 rot/s - d) 2.5 rot/s - e) 12.5 rot/s
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