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The drag force F on a sphere of radius ‘r’ moving slowly with spe...

Physics ECAT Exams Quizzes MCQs Quizzes Physics ECAT Fluid Dynamics Online Test 1

Question:
The drag force F on a sphere of radius ‘r’ moving slowly with speed V through a fluid of viscosity η by Stake’s law?

Option A):
F = πηra
Option B):
F = 6πηrav
Option C):
F = 6πηrω
Option D):
F = 6πηrv

Correct Answer is Option D):
F = 6πηrv

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