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What type of force does a stress produce?

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in Fluid Mechanics by (118k points)
What type of force does a stress produce?

(a) Radial force

(b) External force

(c) Internal resistive force

(d) Axial force

I have been asked this question during a job interview.

This intriguing question originated from Shear Stress and Pressure Gradient topic in chapter Viscous Flow & Turbulent Flow of Fluid Mechanics

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The correct option is (c) Internal resistive force

To explain: According to the continuum mechanics, stress is a physical quantity that produces internal forces. For example: When a solid bar supports a weight, each particle of the bar pushes the particles immediately below it. This happens due to the internal resistive force that is developed due to the stress on the body.

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