A spherical solid ball of volume V is made of a material of density ρ 1 . It is falling through a liquid of density ρ 2 ( ρ 2 < ρ 1 ). Assume that the liquid applies a viscous force on the ball that is proportional to the square of its speed v, i.e., F viscous = – kv 2 (k > 0). The terminal speed of the ball is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
mg = F B + F V
ρ 1 Vg = ρ 2 Vg + Kv T 2
v T = 
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