CHAPTER 2.0 ANSWER
the shear stress in the oil layer to 1 kPa, the thickness of the oil film (mm) should be most nearly A.0.2 B.1.6 C.2.0 D.3.5 Hint: By definition, absolute viscosity, µ where, velocity gradient = DU/d, DU = difference in velocity across the oil film; and d = the thickness of the oil film. Solution: DU = (5 – 0) m/s = 5 m/s Hence,
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