A high-speed flywheel in a motor is spinning at 450 rpm when a power failure suddenly occurs. The flywheel has mass 45.0 kg and diameter 71.0 cm. The power is off for 31.0 s, and during this time the flywheel slows due to friction in its axle bearings. During the time the power is off, the flywheel makes 180 complete revolutions. Part A At what rate is the flywheel spinning when the power comes back on? For related problemsolving tips and strategies, you may want to view a Video Tutor Solution of Rotation with constant angular acceleretion. Express your answer in radians per second. ? rad/s Submit Request Answer Part B How long after the beginning of the power failure would it have taken the flywheel to stop if the power had not come back on? Express your answer in seconds. ? t = Submit Request Answer Part C How many revolutions would the wheel have made during this time?
A high-speed flywheel in a motor is spinning at 450 rpm when a power failure suddenly occurs. The flywheel has mass 45.0 kg and diameter 71.0 cm. The power is off for 31.0 s, and during this time the flywheel slows due to friction in its axle bearings. During the time the power is off, the flywheel makes 180 complete revolutions. Part A At what rate is the flywheel spinning when the power comes back on? For related problemsolving tips and strategies, you may want to view a Video Tutor Solution of Rotation with constant angular acceleretion. Express your answer in radians per second. ? rad/s Submit Request Answer Part B How long after the beginning of the power failure would it have taken the flywheel to stop if the power had not come back on? Express your answer in seconds. ? t = Submit Request Answer Part C How many revolutions would the wheel have made during this time?
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Exercise 9.15 - Enhanced - with Solution
A high-speed flywheel in a motor is spinning at 450 rpm when a
power failure suddenly occurs. The flywheel has mass 45.0 kg
and diameter 71.0 cm. The power is off for 31.0s, and during
this time the flywheel slows due to friction in its axle bearings.
During the time the power is off, the flywheel makes 180
complete revolutions.
Submit
Request Answer
Part B
For related problemsolving tips and strategies, you may want to
view a Video Tutor Solution of Rotation with constant angular
acceleretion.
How long after the beginning of the power failure would it have taken the flywheel to stop if the power had not come back on?
Express your answer in seconds.
V AEO
?
t =
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Submit
Request Answer
Part C
How many revolutions would the wheel have made during this time?
Express your answer in revolutions.
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Request Answer
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<Homework 7
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Exercise 9.15 - Enhanced - with Solution
A high-speed flywheel in a motor is spinning at 450 rpm when a
power failure suddenly occurs. The flywheel has mass 45.0 kg
and diameter 71.0 cm. The power is off for 31.0 s, and during
this time the flywheel slows due to friction in its axle bearings.
During the time the power is off, the flywheel makes 180
complete revolutions.
Part A
At what rate is the flywheel spinning when the power comes back on?
For related problemsolving tips and strategies, you may want to
view a Video Tutor Solution of Rotation with constant angular
acceleretion.
Express your answer in radians per second.
ΑΣφ
rad/s
Submit
Request Answer
Part B
How long after the beginning of the power failure would it have taken the flywheel to stop if the power had not come back on?
Express your answer in seconds.
ΠΠ ΑΣφ
?
t =
Submit
Request Answer
Part C
How many revolutions would the wheel have made during this time?
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