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Which among the following force is developed due to resistance of a fluid flow?

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+1 vote
in Fluid Mechanics by (118k points)
Which among the following force is developed due to resistance of a fluid flow?

(a) Viscous force

(b) Inertial force

(c) Gravity force

(d) Pressure force

I had been asked this question during a job interview.

Enquiry is from Types of Forces Acting in Moving Fluid topic in portion Dimensional and Model Analysis of Fluid Mechanics

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Best answer
The correct answer is (a) Viscous force

Explanation: Viscous force is the force that is developed due to resistance of a fluid flow. Viscous force is equal to the product of shear stress due to viscosity and surface area of the fluid. It acts in the opposite direction to that of the acceleration.

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