Question

What is Poiseuille’s law?

(a) η=\(\frac{πpr^4 t}{8Vl} \)

(b) η=\(\frac{πpr^4 t}{16Vl} \)

(c) η=\(\frac{πpr^4 t}{32Vl} \)

(d) η=\(\frac{3πpr^4 t}{8Vl} \)

This question was posed to me by my school principal while I was bunking the class.

The doubt is from Lubrication System topic in division Lubrication System and Tractor’s Classification of Farm Machinery

Answer 1

Correct option is (a) η=\(\frac{πpr^4 t}{8Vl} \)

The explanation: Poiseuille’s law is a physical law that gives the pressure drop in an incompressible and Newtonian fluid in laminar flow flowing through a long cylindrical pipe of constant cross section.

Formula for Poiseuille’s law is: η=\(\frac{πpr^4 t}{8Vl} \)