opic: Angular Momentum Show the complete solution. 1. An object rotates at 3 rad/s and has a moment of inertia of 5 kg•m2. What is the object’s angular momentum? 2. A 0.5 kg sphere rotates at a constant angular speed of 5 rad/s. What is the angular speed if it has a uniform radius of 25 cm. (Hint: Determine first the moment of inertia of the spehere.) 3. A merry-go-round at a playground is rotating at 4.0 rev/min. Three children jump on and increase the moment of inertia of the merry-go-round/children rotating system by 25%. What is the new rotation rate (in rad/s)?
opic: Angular Momentum Show the complete solution. 1. An object rotates at 3 rad/s and has a moment of inertia of 5 kg•m2. What is the object’s angular momentum? 2. A 0.5 kg sphere rotates at a constant angular speed of 5 rad/s. What is the angular speed if it has a uniform radius of 25 cm. (Hint: Determine first the moment of inertia of the spehere.) 3. A merry-go-round at a playground is rotating at 4.0 rev/min. Three children jump on and increase the moment of inertia of the merry-go-round/children rotating system by 25%. What is the new rotation rate (in rad/s)?
University Physics Volume 1
18th Edition
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:William Moebs, Samuel J. Ling, Jeff Sanny
Chapter10: Fixed-axis Rotation
Section: Chapter Questions
Problem 63P: A system consists of a disk of mass 2.0 kg and radius 50 cm upon which is mounted an annular...
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Show the complete solution.
1. An object rotates at 3 rad/s and has a moment of inertia of 5 kg•m2. What is the object’s angular momentum?
2. A 0.5 kg sphere rotates at a constant angular speed of 5 rad/s. What is the angular speed if it has a uniform radius of 25 cm. (Hint: Determine first the moment of inertia of the spehere.)
3. A merry-go-round at a playground is rotating at 4.0 rev/min. Three children jump on and increase the moment of inertia of the merry-go-round/children rotating system by 25%. What is the new rotation rate (in rad/s)?
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