Question

The non dimensional factor governing viscous or frictional resistance is

Answer 1

$viscos \: drag \: f = 6\pi \eta \: av$

Answer 2

Answer:

Reynolds number

Explanation:

• Reynolds number = inertia force / viscous force
• Also , Rn = coefficient of viscosity * velocity * length / density. Thus , Reynolds number is the non dimensional factor governing viscosity i.e. frictional resistance .