Newton's law of viscosity establishes a direct mathematical correlation between____________________?
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Answer: A. shear stress anctthejiate of angular distortion
Explanation
Newton's law of viscosity states that shear stress is directly proportional to the velocity gradient in a fluid. The rate of angular distortion in fluid flow is mathematically equivalent to the spatial gradient of fluid velocity. This linear relationship defines the fundamental behavior of Newtonian fluids under applied mechanical shear forces. Viscosity is a fluid property that measures resistance to gradual deformation by shear or tensile stress forces. Sir Isaac Newton formulated this proportional law to describe the internal friction experienced by flowing liquids and gases. The constant of proportionality connecting shear stress and velocity gradient is known as the dynamic viscosity coefficient.
Option B is incomplete because shear stress depends on the rate of velocity change rather than viscosity alone. Option C incorrectly includes velocity as an independent variable instead of focusing on spatial velocity gradients. Options D and E are wrong because pressure does not form part of the primary Newtonian fluid shear stress equation.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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