Question

Explain stokes law and also give it's condition ???
don't copy from google

Answer 1

$\huge\mathfrak\red{Elo!}$

- HERE'S THE ANSWER -

✔️ When a solid body moves through a fluid,the fluid in contact with the solid is dragged with it. Relative velocities are established between the layers of the fluids near the solid so that the viscous forces start operating. The fluid exerts viscous force on the solid to oppose the motion of the solid. The magnitude of the viscous force depends on the shape and size of the solid body, Its speed and the coefficient of viscosity of the fluid.

✔️ Suppose a spherical body of radius r moves at speed v through a fluid of viscosity ƞ .the viscous force F acting on the body depends on r,v and ƞ . assuming that the force is proportional to various powers of these quantities we can obtain the dependence  through dimensional analysis.

Answer 2

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