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Mechanical Properties of Fluids

Surface tension and viscosity

A river water is flowing at 5ms^{-1}. The depth of river water

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Solving time: 3 mins

A river water is flowing at $5 m s^{- 1}$ . The depth of river water is $10 m .$ The shearing stress between horizontal layers of the river water is
(Viscosity of water is $1$ deca poise)

0.1 \times 1 0^{- 3} N m^{- 1}

0.5 \times 1 0^{- 3} N m^{- 1}

1 0^{- 3} N m^{- 1}

2 \times 1 0^{- 3} N m^{- 1}

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Sofia Discussed

A river water is flowing at

5 m s^{- 1}

. The depth of river water is

10 m .

The shearing stress between horizontal layers of the river water is
(Viscosity of water is

1

deca poise)

14 mins ago

Discuss this question LIVE

14 mins ago

Text solutionVerified

F = η A \frac{d v}{d x} \to

viscous force
shearing stress

= \frac{F}{A} = η \frac{d v}{d x}

\frac{d v}{d x} = \frac{5 m s ^{- 1}}{10 m} = 0.5

η = 1

millideca poise

= 1 0^{- 3}

decapoise

∴

shearing stress

= 0.5 \times 1 0^{- 3} N m^{- 2}

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Question Text	A river water is flowing at $5 m s^{- 1}$ . The depth of river water is $10 m .$ The shearing stress between horizontal layers of the river water is (Viscosity of water is $1$ deca poise)
Topic	Mechanical Properties of Fluids
Subject	Physics
Class	Class 11
Answer Type	Text solution:1
Upvotes	136

A river water is flowing at $5 m s^{- 1}$ . The depth of river water is $10 m .$ The shearing stress between horizontal layers of the river water is
(Viscosity of water is $1$ deca poise)

Text solutionVerified

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A river water is flowing at 5ms−1. The depth of river water is 10m. The shearing stress between horizontal layers of the river water is(Viscosity of water is 1 deca poise)

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A river water is flowing at $5 m s^{- 1}$ . The depth of river water is $10 m .$ The shearing stress between horizontal layers of the river water is
(Viscosity of water is $1$ deca poise)