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(Homework 6 Problem 9.75 7 of 10 > Beie I Constacts Part A It has been argued that power plants should make use of off-peak hours (such as Sate at night) to generate mechanical energy and storeit untiltis needed during peak load times, such as the middie of the day. One suggestion has been to store the energy in large fywheels spinning on nearly frictioniess bal-bearings Consider a fywheel made of iron, with a density of 7B00 kg/min the shape of a uniform disk with a thickness of 13.8 cm What would the dameter of such a disk need to be ifitis to store an amount of kinetic energy of 12.7 MI when spinning at an angular velocity of 910pm about an axis perpendicular to the disk at its center? O B) ? Submit Request Anwer - Part B What would be the centripetal acceleration of a point on its rim when spinning at this rate? Submit Beavest Anwer Next> Provide Eeedback

(Homework 6 Problem 9.75 7 of 10 > Beie I Constacts Part A It has been argued that power plants should make use of off-peak hours (such as Sate at night) to generate mechanical energy and storeit untiltis needed during peak load times, such as the middie of the day. One suggestion has been to store the energy in large fywheels spinning on nearly frictioniess bal-bearings Consider a fywheel made of iron, with a density of 7B00 kg/min the shape of a uniform disk with a thickness of 13.8 cm What would the dameter of such a disk need to be ifitis to store an amount of kinetic energy of 12.7 MI when spinning at an angular velocity of 910pm about an axis perpendicular to the disk at its center? O B) ? Submit Request Anwer - Part B What would be the centripetal acceleration of a point on its rim when spinning at this rate? Submit Beavest Anwer Next> Provide Eeedback

College Physics
College Physics
1st Edition
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:Paul Peter Urone, Roger Hinrichs
Chapter12: Fluid Dynamics And Its Biological And Medical Applications
Section: Chapter Questions
Problem 64PE: Oxygen reaches the veinless cornea of the eye by diffusing through its tear layer, which is 0.500-mm...
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rses <Homework #6 -Home Problem 9.75 us 7 of 10 Review I Constants son eText Part A It has been argued that power plants should make use of off-peak hours (such as late at night) to generate mechanical energy and store it until it is needed during peak load times, such as the middle of the day. One suggestion has been to store the energy in large flywheels spinning on nearly frictionless ball-bearings. Consider a flywheel made of iron, with a density of 7800 kg/m, in the shape of a uniform disk with a thickness of 13.8 cm. y Area What would the diameter of such a disk need to be if it is to store an amount of kinetic energy of 12.7 MJ when spinning at an angular velocity of 91.0 rpm about an axis perpendicular to the disk at its center? ument Sharing er Settings urse Tools m Submit Request Answer Part B What would be the centripetal acceleration of a point on its rim when spinning at this rate? ? a = m/s? Submit Request Answer Provide Feedback Next > DD DII F11 F10 F9 吕0 O00 F6 F7 F5 esc F2 F3 F4 8. 6 5
Transcribed Image Text:rses <Homework #6 -Home Problem 9.75 us 7 of 10 Review I Constants son eText Part A It has been argued that power plants should make use of off-peak hours (such as late at night) to generate mechanical energy and store it until it is needed during peak load times, such as the middle of the day. One suggestion has been to store the energy in large flywheels spinning on nearly frictionless ball-bearings. Consider a flywheel made of iron, with a density of 7800 kg/m, in the shape of a uniform disk with a thickness of 13.8 cm. y Area What would the diameter of such a disk need to be if it is to store an amount of kinetic energy of 12.7 MJ when spinning at an angular velocity of 91.0 rpm about an axis perpendicular to the disk at its center? ument Sharing er Settings urse Tools m Submit Request Answer Part B What would be the centripetal acceleration of a point on its rim when spinning at this rate? ? a = m/s? Submit Request Answer Provide Feedback Next > DD DII F11 F10 F9 吕0 O00 F6 F7 F5 esc F2 F3 F4 8. 6 5
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