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2: A shaft 10 cm in diameter is pulled steadily at V = 0.5 m/s through a bearing sleeve of 12 cm in diameter and 50 cm long. The clearance

is filled with olive oil of dynamic viscosity µ = 0.081 Pa.s and specific gravity Sg = 0.8. Estimate the force required to pull the shaft.

Fig: 1

Fig: 2