For the Stoke’s law to be valid in the case of a falling sphere in a fluid, the_____________________?

Question

For the Stoke’s law to be valid in the case of a falling sphere in a fluid, the_____________________?

Answer 1

A. Reynolds number (based on sphere diameter) should be < 1
B. Flow around the sphere should be in turbulent region
C. Sphere must be metallic
D. Fluid density should be constant

Correct Answer: Sphere must be metallic ✔

Last Updated: February 11, 2019