A cylinder with rotational inertia 0.050 kg m2 is spinning with angular velocity 25 rad/s, clockwise with negligible friction about a vertical axis. A second cylinder that is not spinning is centered above and dropped onto the spinning cylinder. Kinetic friction produces torque of amount 0.60 Nm that affects both objects until the two cylinders spin together at angular velocity 18 rad/s, clockwise. (a) Determine the amount of time it takes for friction to cause the two objects to spin together. (b) Determine the rotational inertia of the second cylinder that was dropped onto the first. (c) Determine the total amount of heat and sound energy resulting from the interaction of the cylinders.
A cylinder with rotational inertia 0.050 kg m2 is spinning with angular velocity 25 rad/s, clockwise with negligible friction about a vertical axis. A second cylinder that is not spinning is centered above and dropped onto the spinning cylinder. Kinetic friction produces torque of amount 0.60 Nm that affects both objects until the two cylinders spin together at angular velocity 18 rad/s, clockwise. (a) Determine the amount of time it takes for friction to cause the two objects to spin together. (b) Determine the rotational inertia of the second cylinder that was dropped onto the first. (c) Determine the total amount of heat and sound energy resulting from the interaction of the cylinders.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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A cylinder with rotational inertia 0.050 kg m2 is spinning with angular velocity 25 rad/s, clockwise with negligible friction about a vertical axis. A second cylinder that is not spinning is centered above and dropped onto the spinning cylinder. Kinetic friction produces torque of amount 0.60 Nm that affects both objects until the two cylinders spin together at angular velocity 18 rad/s, clockwise.
(a) Determine the amount of time it takes for friction to cause the two objects to spin together.
(b) Determine the rotational inertia of the second cylinder that was dropped onto the first.
(c) Determine the total amount of heat and sound energy resulting from the interaction of the cylinders.
Transcribed Image Text:not
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spinning
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