In a home laundry dryer, a cylindrical tub containing wet clothes is rotated steadily about a horizontal axis as shown in the figure below. So that the clothes will dry uniformly, they are made to tumble. The rate of rotation of the smooth-walled tub is chosen so that a small piece of cloth will lose contact with the tub when the cloth is at an angle of 0 = 63.5º above the horizontal. If the radius of the tub is r = 0.415 m, what rate of revolution is needed? rev/min

Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
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Chapter5: More Applications Of Newton’s Laws
Section: Chapter Questions
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In a home laundry dryer, a cylindrical tub containing wet clothes is rotated
steadily about a horizontal axis as shown in the figure below. So that the
clothes will dry uniformly, they are made to tumble. The rate of rotation of
the smooth-walled tub is chosen so that a small piece of cloth will lose
contact with the tub when the cloth is at an angle of 0 = 63.5º above the
horizontal. If the radius of the tub is r = 0.415 m, what rate of revolution
is needed?
rev/min
Transcribed Image Text:In a home laundry dryer, a cylindrical tub containing wet clothes is rotated steadily about a horizontal axis as shown in the figure below. So that the clothes will dry uniformly, they are made to tumble. The rate of rotation of the smooth-walled tub is chosen so that a small piece of cloth will lose contact with the tub when the cloth is at an angle of 0 = 63.5º above the horizontal. If the radius of the tub is r = 0.415 m, what rate of revolution is needed? rev/min
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