Question

Coefficient of viscosity velocity gradient​

Answer 1

The ratio of the shearing stress to the velocity gradient is a measure of the viscosity of the fluid and is called the coefficient of viscosity η, or η= Fx / Av. The cgs unit for measuring the coefficient of viscosity is the poise.

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Answer 2

Explanation:

coefficient of viscosity is given by

T (shear stress) = U. du / dy = dQ/dt

U = coefficient of viscosity

du/dy = velocity gradient

dQ/dt = Rate of shear strain