(5 points) The figure below shows the relationship between shear stress and velo

Question

(5 points) The figure below shows the relationship between shear stress and velocity gradient for 4 fluids. Based on this figure, which is the following is definitely true? Dynamic viscosity of Non-Newtonian fluid is greater than that of Newtonian fluid Dynamic viscosity of Newtonian fluid is greater than that of Non-Newtonian fluid Kinematic viscosity of Non-Newtonian fluid is greater than that of Newtonian fluid Kinematic of Newtonian fluid is greater than that of Non-Newtonian fluid 1. a. b. C. d. DEAL VELOCITY G8A0ENT TYPES OF FLUIOS Non-Newtonian Fluid Newtonian Fluid

Explanation / Answer

Dynamic viscosity is defined as the ratio of the shear stress per unit value of velocity gradient. i.e., it is the slope of the graph drawn between shear stress and velocity gradient. Graph gives us only the definition of dynamic viscosity and not the kinematic viscosity. From the graph, the slope of non newtonian fluid curve is greater than that of the newtonian fluid, i.e.,the dynamic viscosity of non newtonian fluid is greater than the newtonian fluid. Answer is a) dynamic viscosity of non newtonian fluid is greater than the newtonian fluid.

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