Question

Find the kinematic viscosity of oil having density 1962 g/m3. the force experienced for area of 20 m2  is 4.904 kN and velocity of gradient at that point is 0.2/s.

(a) 0.625

(b) 1.25

(c) 2.5

(d) None of the mentioned

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This question is from Viscosity topic in section Properties of Fluids of Fluid Mechanics

Answer 1

Right answer is (a) 0.625

Explanation: kinematic viscosity = dynamic viscosity / density

                                                    = (shear stress*density)/velocity gradient

                                                    = (4904* 1962)/(20*0.2)

                                                    = .625.