Question
Define viscosity. Explain Newton's law of viscosity and discuss the physical 05 significance of viscosity in engineering applications.
Answer :
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Viscosity is a fundamental property of fluids that measures the resistance offered by a fluid to gradual deformation or flow. It arises due to internal friction between adjacent layers of fluid moving at different velocities. Fluids with high viscosity, such as honey, resist motion more than fluids with low viscosity, such as water. Viscosity plays an important role in determining the flow behavior of liquids and gases in fluid mechanics. Newton’s law of viscosity states that the shear stress between adjacent fluid layers is directly proportional to the rate of change
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