Stokes' Law is given as:
Correct answer: B. F = 6πηrv
- A. F = 6πηr2v
- B. F = 6πηrv
- C. F = 6πηrv-1
- D. F = 6π2ηr3v
Explanation
Stokes' law is a law in physics that states that the force that resists a sphere's fall in a viscous fluid is directly proportional to the velocity of the sphere, the radius of the sphere, and the viscosity of the fluid i.e. 6πηrv
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About Fluid Dynamics
Fluid flow is described through speed, pressure and density, including steady flow and the equation of continuity for conserving mass. Bernoulli's equation relates pressure, speed and height, while fluid drag and terminal velocity explain why a falling object eventually moves at constant speed when drag balances its weight.
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