A uniform horizontal disk of mass M and radius R is rotating about its vertical axis with

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A uniform horizontal disk of mass M and radius R is rotating about its vertical axis with an angular velocity ω. When it is placed on a horizontal surface, the coefficient of kinetic friction between the disk and surface is μ_k.

(a) Find the torque dτ exerted by the force of friction on a circular element of radius r and width dr.

(b) Find the total torque exerted by friction on the disk.

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Fundamentals of Ethics for Scientists and Engineers

ISBN: 978-0195134889

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Authors: Edmund G. Seebauer, Robert L. Barry

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Question Posted: Jun 29, 2011 03:17 AM

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A uniform horizontal disk of mass M and radius R is rotating about its vertical axis with

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a The force of friction d f k is the product of k and g dm where dm 2 r dr and i...View the full answer

Fundamentals of Ethics for Scientists and Engineers

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