The viscous force between two liquid layers i | vedclass

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Question

(C) According to Newton's law of viscosity,the viscous force $F$ acting on an area $A$ is given by $	au = \frac{F}{A} = -\eta \frac{dv}{dz}$.Viscous

Vedclass · Accepted Answer

tangential to the liquid surface.

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(C) According to Newton's law of viscosity,the viscous force $F$ acting on an area $A$ is given by $	au = \frac{F}{A} = -\eta \frac{dv}{dz}$.Viscous force acts like internal friction between adjacent layers of a fluid moving with different velocities.This force opposes the relative motion between the layers,causing a shearing action.$A$ shear force always acts tangential to the plane of the fluid layers.Therefore,the viscous force is tangential to the liquid surface.

The viscous force between two liquid layers is

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