Calculate the terminal velocity of a rain drop of radius 0.12cm

Question

asked Mar 16, 2022 231k views

1 Answer

Mohammad Ali Rony · Answer 1 · 2022-03-20T05:00:31+0000

Step-by-step explanation:

Given that,

The radius of rain drop, r = 0.12 cm = 0.0012 m

The viscocity of air is,
$\eta=18* 10^(-5)\ poise$

Let the viscous force is,
$F = 0.010173\ N$

The viscous force is given by :

$F=6\pi \eta rv\\\\v=(F)/(6\pi \eta r)$

Put all the values,

$v=(0.010173)/(6\pi 18* 10^(-5)* 0.0012 )\\\\v=2498.58\ m/s$