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Problem 4 A lubricated shaft rotates inside a concentric sleeve bearing at 1000rpm. The clearance is small with respect to the radius R so a

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Problem 4 A lubricated shaft rotates inside a concentric sleeve bearing at 1000rpm. The clearance is small with respect to the radius R so a linear velocity distribution in the lubricant may be assumed. What are the power requirements to rotate the shaft? R=2cm,L =10cm,=0.2mm and =0.1 N.s /m2.20pts

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