Question 44: Properties of Matter

Question

A small ball of mass $$m$$ and density $$\rho$$ is dropped in a viscous liquid of density $$\rho_0$$. After sometime, the ball falls with constant velocity. The viscous force on the ball is :

Accepted Answer

$$\begin{aligned}
& F_V=\left(m g-F_Bight) \frac{m g}{m g}=\left(\frac{ho V_g-ho_0 V_g}{ho V_g}ight) m g \
& F_v=m g\left(1-\frac{ho_0}{ho}ight)
\end{aligned}$$

Answer

$$m g\left(1-\frac{\rho_0}{\rho}\right)$$

Answer

$$m g\left(\frac{\rho_0}{\rho}-1\right)$$

Answer

$$m g\left(1-\rho \rho_0\right)$$

Answer

$$m g\left(1+\frac{\rho}{\rho_0}\right)$$

Properties of Matter

A small ball of mass $m and density \rho is dropped in a viscous liquid of density \rho_0$. After sometime, the ball falls with constant velocity. The viscous force on the ball is :

Choose the correct answer: