Question 108: Properties of Matter

Question

The terminal velocity (vt) of the spherical rain drop depends on the radius (r) of the spherical rain drop as :

Accepted Answer

$$6\pi \eta {v_t}r = {4 \over 3}\pi {r^3}(\rho  - \sigma )g$$
$$ \Rightarrow {v_t} = C{r^2}$$ where C is a constant
or $${v_t} \propto {r^2}$$

Answer

r1/2

Answer

r

Answer

r2

Answer

r3

Properties of Matter