Question: The space between two 20-in.-long concentric cylinders is filled with glycerin (viscosity = 8.5 103 lbs/ft). The inner cylinder has a radius of 2

The space between two 20-in.-long concentric cylinders is filled with glycerin (viscosity

The space between two 20-in.-long concentric cylinders is filled with glycerin (viscosity = 8.5 103 lbs/ft). The inner cylinder has a radius of 2 in. and the gap width between cylinders is 0.1 in. Determine (a) the torque and (b) the power required to rotate the inner cylinder at 180 rev/min. The outer cylinder is fixed. Assume the velocity distribution in the gap to be linear. J D i ft*lb i ft*lb/s

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