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Drag force can exist between two layers of liquid.

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+1 vote
in Fluid Mechanics by (118k points)
Drag force can exist between two layers of liquid.

(a) True

(b) False

This question was posed to me in an interview for job.

This interesting question is from Drag on a Sphere in portion Boundary Layer Flow & Forces on Sub-merged Bodies of Fluid Mechanics

1 Answer

+2 votes
by (362k points)
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The correct option is (a) True

To explain I would say: Drag force can exist between two layers of liquid. They can even exist in between two layers of solid surface. Unlike other resistive forces, they are dependent on velocity.

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