A Spherical ball of radius 1 mm and density 10.5 g / cc is dropped in glycerine of coefficient of viscosity 9.8 poise and density 1.5 g / cc. Viscous…

A Spherical ball of radius $\displaystyle 1$ mm and density $\displaystyle 10.5 \mathrm{~g} / \mathrm{cc}$ is dropped in glycerine of coefficient of viscosity $\displaystyle 9.8$ poise and density $\displaystyle 1.5 \mathrm{~g} / \mathrm{cc}$. Viscous force on the ball when it attains constant velocity is $\displaystyle 3696 \times 10^{-x} \mathrm{~N}$. The value of $\displaystyle x$ is (Given, $\displaystyle \mathrm{g}=9.8 \mathrm{~m} / \mathrm{s}^2$ and $\displaystyle \pi=\frac{22}{7}$ )