Calculate the terminal velocity of a droplet (radius =r, density=\rho_d) when its settling in a stagnant fluid (density=\rho_f).

Explanation:

Given that

Radius =R

When drop let will move downward then so

Fb = Bouncy force

Fd = Drag force

We know that

μ=Dynamic viscosity of fluid

V= Terminal velocity

So at the equilibrium condition

So

This is the terminal velocity of droplet.

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