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Coefficient of friction of a laminar flow is_________

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+1 vote
in Fluid Mechanics by (118k points)
Coefficient of friction of a laminar flow is_________

(a) Re/16

(b) Re/64

(c) 16/Re

(d) 64/Re

The question was posed to me by my college professor while I was bunking the class.

My question is from Pipes in Series topic in portion Flow Through Pipes of Fluid Mechanics

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Right option is (c) 16/Re

Explanation: Coefficient of friction is defined as the value that shows relationship between force and the normal reaction. It is mainly used to find out an object’s normal force and frictional force. Thus, it is equal to 16/Re.

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