Question

state stokes law for the viscous force acting on a sphere of radius r moving in a fluid os viscoscity n with velocity v obtain unit of coefficient of vicosity in terms of kg metre and second​

Answer 1

Answer:

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the force required to move a sphere through a given viscous fluid at a low uniform velocity is directly proportional to the velocity and radius of the sphere

Explanation:

Stokes law is the basis of the falling-sphere viscometer, in which the fluid is stationary in a vertical glass tube. ... Knowing the terminal velocity, the size and density of the sphere, and the density of the liquid, Stokes' law can be used to calculate the viscosity of the fluid.

The most common unit of viscosity is the dyne second per square centimeter [dyne s/cm2], which is given the name poise [P] after the French physiologist Jean Poiseuille (1799–1869). Ten poise equal one pascal second [Pa s] making the centipoise [cP] and millipascal second [mPa s] identical.

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