Question: Some instruments having angular motion are damped by means of a disk connected to the shaft . The disk, in turn, is immersed in a

Some instruments having angular motion are damped by means of a disk connected to the shaft . The disk, in turn, is immersed in a container of oil, as shown. Derive a formula for the damping torque as a function of the disk diameter D, spacing S, rate of rotation ω, and oil viscosity μ.

Shaft Container Oil

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