What torque is required to drive the disk at 660 rpm

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A disk spins within an oil-filled enclosure, having 2.4 mm clearance from flat surfaces each side of the disk. The disk surface extends from radius 12 to 86 mm. What torque is required to drive the disk at 660 rpm if the oil's absolute viscosity is .12 N s/m^2?

Reference no: EM13323567

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