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A mechanical shaft is to be rotated at a speed of 300rpm within a stationary boot. The length of the boot was 55cm. The outer

A mechanical shaft is to be rotated at a speed of 300rpm within a stationary boot. The length of the boot was 55cm. The outer diameter of the shaft was 24cm and that of the boot was 17.5cm. The thickness of the boot wall was 2.25cm. If the greasing fluid viscosity was 0.168 N. s/m2. Find out the torque required for the specified rotation.


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