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Stokes' Law (Viscous Drag)

Experiment Module

Stokes Drag

Theory & Logic

Theoretical Background

Physics describes the fundamental mechanism of the universe. The Stokes' Law (Viscous Drag) is an essential tool for understanding Stokes' Law (Viscous Drag) in quantitative terms. Calculate Fd = 6πμrv (Laminar flow sphere).

Mathematical Formulation

The relationship between the variables is governed by the following equation:

Result = 6 × π × mu × r × v
Eq 1.1: Governing Formula

Variable Legend

Symbol Parameter Unit
mu Viscosity Pa·s
r Radius m
v Velocity m/s

Practical Calculation Example

Problem

Calculating the result when:

  • Viscosity = 70 Pa·s
  • Radius = 20 m
  • Velocity = 95 m/s

Solution

Substituting into Eq 1.1:

Result = 6 × π × 70 × 20 × 95