Viscous drag force depends on

Out of friction force and viscous force,which depends on velocity?

An oil drop of mass m fall through air with a terminal velocity in the presence of upward electric field of intensity E . the drop carries a charge +q . R is the viscous drag force and f is the buoyancy force . Them for the motion of the drop.

On which factors viscous force depends ?

Viscosity| Viscous & drag force on flat plate| Stoke's law: terminal velocity

Out of friction force and viscous force which depends upon velocity.

Out of friction force and viscous force which depends upon velocity.