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How many more seconds are required for the fan to come to rest if the angular acceleration remains constant at the value calculated in Part A?

How many more seconds are required for the fan to come to rest if the angular acceleration remains constant at the value calculated in Part A?

Physics for Scientists and Engineers: Foundations and Connections
Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter12: Rotation I: Kinematics And Dynamics
Section: Chapter Questions
Problem 62PQ: Problems 62 and 63 are paired. 62. C A disk is rotating around a fixed axis that passes through its...
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**Problem Description:** An electric fan is turned off, and its angular velocity decreases uniformly from 510 revolutions per minute (rev/min) to 170 rev/min over a time interval of 3.55 seconds. **Part A:** Determine the angular acceleration (\(\alpha\)) of the fan. - Given: \(\alpha = -1.60 \, \text{rev/s}^2\) - Status: Correct **Part B:** Calculate the number of revolutions made by the fan blades during the time they are slowing down. - Answer: 20.1 revolutions - Status: Correct - Note: An answer of 20 revolutions was previously given, which was either rounded differently or did not use as many significant figures as required. **Part C:** Determine how many more seconds are required for the fan to come to rest if the angular acceleration (\(\alpha\)) is the same as calculated in Part A. _Hint Section and Response Mechanisms:_ - Each part of the problem allows you to view a hint for guidance. - Upon entering an answer, a checkmark indicates whether the answer is correct or not. _No graphs or diagrams are present in this text._
Transcribed Image Text:**Problem Description:** An electric fan is turned off, and its angular velocity decreases uniformly from 510 revolutions per minute (rev/min) to 170 rev/min over a time interval of 3.55 seconds. **Part A:** Determine the angular acceleration (\(\alpha\)) of the fan. - Given: \(\alpha = -1.60 \, \text{rev/s}^2\) - Status: Correct **Part B:** Calculate the number of revolutions made by the fan blades during the time they are slowing down. - Answer: 20.1 revolutions - Status: Correct - Note: An answer of 20 revolutions was previously given, which was either rounded differently or did not use as many significant figures as required. **Part C:** Determine how many more seconds are required for the fan to come to rest if the angular acceleration (\(\alpha\)) is the same as calculated in Part A. _Hint Section and Response Mechanisms:_ - Each part of the problem allows you to view a hint for guidance. - Upon entering an answer, a checkmark indicates whether the answer is correct or not. _No graphs or diagrams are present in this text._
## Educational Website Transcription **Part C** **Question:** How many more seconds are required for the fan to come to rest if the angular acceleration remains constant at the value calculated in Part A? **Interface:** - **Icons:** - Clipboard icon - Equation editor icon - Back and undo arrows - Reset icon - Help icon - **Input Field:** A blank space to enter the answer, followed by "s" for seconds. - **Buttons:** - "Submit" button to send the answer. - Additional Links: - "View Available Hint(s)" for guidance. - "Provide Feedback" for user feedback. - **Footer Information:** - © 2022 Pearson Education Inc. All rights reserved. - Links to Terms of Use, Privacy Policy, Permissions, and Contact Us. For further assistance or clarification, click on “View Available Hint(s)” or “Provide Feedback.”
Transcribed Image Text:## Educational Website Transcription **Part C** **Question:** How many more seconds are required for the fan to come to rest if the angular acceleration remains constant at the value calculated in Part A? **Interface:** - **Icons:** - Clipboard icon - Equation editor icon - Back and undo arrows - Reset icon - Help icon - **Input Field:** A blank space to enter the answer, followed by "s" for seconds. - **Buttons:** - "Submit" button to send the answer. - Additional Links: - "View Available Hint(s)" for guidance. - "Provide Feedback" for user feedback. - **Footer Information:** - © 2022 Pearson Education Inc. All rights reserved. - Links to Terms of Use, Privacy Policy, Permissions, and Contact Us. For further assistance or clarification, click on “View Available Hint(s)” or “Provide Feedback.”
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