Engineering
Physics
Viscosity and Terminal Velocity New
Question

Viscous force acting on sphere of radius R moving with certain velocity in a liquid is propotinal to

R1/2

R2

R3

R

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Solution
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The viscous force on a sphere moving through a fluid is given by Stokes' Law. The formula is:

F=6πηRv

where F is the viscous force, η is the fluid's viscosity, R is the sphere's radius, and v is its velocity. The force is directly proportional to the radius R.

Final Answer: R