A 25-mm-diameter shaft is pulled through a cylindrical bearing as shown in Fig. P1.55. The lubricant that fills the 0.3-mm gap between the shaft and bearing is an oil having a kinematic viscosity of 8.0 10-4 m2/s and a specific gravity of0.91. Determine the force P required to pull the shaft at a velocity of 3 m/s. Assume the velocity distribution in the gap is linear.
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