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A small shear force is applied on an element and then removed. If the element regains it’s original position, what kind of an element can it be?

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in Fluid Mechanics by (118k points)
A small shear force is applied on an element and then removed. If the element regains it’s original position, what kind of an element can it be?

(a) Solid

(b) Liquid

(c) Fluid

(d) Gaseous

This question was posed to me in homework.

My question is taken from Introduction to Fluid Mechanics in portion Properties of Fluids of Fluid Mechanics

1 Answer

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Best answer
Correct option is (a) Solid

For explanation: Fluids (liquids and gases) cannot resist even a small shear force and gets permanently deformed. Hence, the element must be a solid element.

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