Part A A wheel is rotating about an axis that is in the 2-direction. The angular velocity w; is -6.00 rad/s at t= 0, increases linearly with time, and is +4.00 rad/s at t= 19.0 s. We have taken counterolockwise rotation to be positive. Is the angular acceleration during this time interval positive or negative? • positive O negative Submit Previous Answers v Correct: The angular acceleration is positive, since the angular velocity increases steadily from a negative value to a positive value. Part B Part C How long is the time interval during which the speed of the wheel is decreasing? Express your answer with the appropriate units. HA Value Units ta = Submit Previous Answers Request Answer X Incorrect; Try Again; 3 attempts remaining Part D What is the angular displacement of the wheel from t= 0s to t= 19.0 s ? rad
Part A A wheel is rotating about an axis that is in the 2-direction. The angular velocity w; is -6.00 rad/s at t= 0, increases linearly with time, and is +4.00 rad/s at t= 19.0 s. We have taken counterolockwise rotation to be positive. Is the angular acceleration during this time interval positive or negative? • positive O negative Submit Previous Answers v Correct: The angular acceleration is positive, since the angular velocity increases steadily from a negative value to a positive value. Part B Part C How long is the time interval during which the speed of the wheel is decreasing? Express your answer with the appropriate units. HA Value Units ta = Submit Previous Answers Request Answer X Incorrect; Try Again; 3 attempts remaining Part D What is the angular displacement of the wheel from t= 0s to t= 19.0 s ? rad
College Physics
1st Edition
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:Paul Peter Urone, Roger Hinrichs
Chapter6: Uniform Circular Motion And Gravitation
Section: Chapter Questions
Problem 16PE: Olympic ice skaters are able to spin at about 5 rev/s. (a) What is their angular velocity in radians...
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Question
![Part A
A wheel is rotating about an axis that is in the 2-direction. The angular velocity w; is -6.00 rad/s
at t = 0, increases linearly with time. and is +4.00 rad/s at t= 19.0 s. We have taken
counterclockwise rotation to be positive.
Is the angular acceleration during this time interval positive or negative?
O positive
O negative
Submit
Previous Answers
v Correct
The angular acceleration is positive, since the angular velocity increases steadily from a negative value to a positive value.
Part B
Part C
How long is the time interval during which the speed of the wheel is decreasing?
Express your answer with the appropriate units.
O
ta =
Value
Units
Submit
Previous Answers Request Answer
X Incorrect; Try Again; 3 attempts remaining
Part D
What is the angular displacement of the wheel fromt= 0s to t= 19.0 s ?
ΑΣφ.
rad](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fe6d7b9ce-d2f0-4e06-b3ff-298d284fb108%2F5d27d194-1691-4c76-8e1d-59dd5784f22f%2F9cwjige_processed.png&w=3840&q=75)
Transcribed Image Text:Part A
A wheel is rotating about an axis that is in the 2-direction. The angular velocity w; is -6.00 rad/s
at t = 0, increases linearly with time. and is +4.00 rad/s at t= 19.0 s. We have taken
counterclockwise rotation to be positive.
Is the angular acceleration during this time interval positive or negative?
O positive
O negative
Submit
Previous Answers
v Correct
The angular acceleration is positive, since the angular velocity increases steadily from a negative value to a positive value.
Part B
Part C
How long is the time interval during which the speed of the wheel is decreasing?
Express your answer with the appropriate units.
O
ta =
Value
Units
Submit
Previous Answers Request Answer
X Incorrect; Try Again; 3 attempts remaining
Part D
What is the angular displacement of the wheel fromt= 0s to t= 19.0 s ?
ΑΣφ.
rad
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