Chapter 2.8, Problem 42E

(a)

To determine

To calculate: The rate of change $\frac{dV}{dt}$ in terms of $R$ and $\frac{dR}{dt}$ when $L=80$ mm, $\rho =500$ and $v=0.003$.

(b)

To determine

To calculate: The rate of change $\frac{dV}{dt}$ at a place where the radius of the vessel is $R=0.075\text{ mm}$ and $\frac{dR}{dt}=-0.0002\text{ mm/sec}$.