Hi all,Im having a bit of trouble understanding the concept of

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Viscosity in fluids relates to how they resist flow, particularly in scenarios involving shear stress between two plates. The shear stress is defined by the equation τ = μ(du/dy), where μ is the dynamic viscosity, du is the velocity difference, and dy is the distance between the plates. The viscous force acting on the fluid is directly proportional to the shear stress and the area over which it acts. Understanding this relationship is crucial for analyzing fluid behavior in engineering applications. The discussion highlights the importance of these concepts in fluid dynamics.
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Hi all,

Im having a bit of trouble understanding the concept of viscosity in the scenario of a fluid between two plates, with one moving and one being stationary: what is the relevance between the viscous force of the fluid and the shear stress on the fluid given by mu(du/dy) ?
 
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The viscous force is equal to the shear stress times the area over which the shear stress is acting.
 

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