Question

A river's water is flowing at 5 ms. The depth of river water is 10 m.
What is the shearing stress between horizontal layers of the river water?
[coefficient of viscosity of water is 1 milli decapoise)​

Answer 1

Answer:

Stress on the layer of the flowing river is

$stress = 5 \times 10^{-4}$N/m/m

Explanation:

As we know that viscosity is the ratio of shear stress and rate of shear strain

So here we have

Shear stress = rate of shear strain)( viscosity)

so we have

$Strain = \frac{v}{L}$

$strain = \frac{5}{10}$

now we have

$stress = \frac{1}{2}(1 \times 10^{-3})$

$stress = 5 \times 10^{-4}$

#Learn

Topic : Shear stress

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