A disk of radius ro rotate at angular velocity w inside an oil bath of viscosity u, as shown. Assuming a linear velocity profile and neglect shear on the outer disk edges, derive an expression for the viscous torque on the disk.
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A disk of radius ro rotate at angular velocity w inside an oil bath of viscosity u, as shown. Assuming a linear velocity profile and neglect shear on the outer disk edges, derive an expression for the viscous torque on the disk.
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