AP EAMCET Engineering 21 Sep 2020 Shift 2 Paper

(d) Terminal velocity of spherical ball falling through viscous liquid is given as
v=‌

2

9

×‌

R2(ρ−σ)g

η

‌‌‌........(i)
where, σ= density of liquid
ρ= density of ball, and
v= density of liquid and
η= coefficient of viscosity.
From Eq. (i), ‌

v

R2

=‌

2(ρ−σ)g

9η

=‌ constant ‌