Question

calculate viscous force acting on rain.
drop of diameter 2 mm falling with unfarm.
velocity 2mis though air. The coefficient of
Viscosity of air is 1.8 X 16 5 Ns/m2​

Answer 1

Viscous force F=6πηrv

So, F=6π×1.8×10

−4

×0.2×10

−3

×2

⟹ F=1.36×10

−6

N