b Considering fully developed steady laminar flow through a straight tube of circular cross section, the Navier Stoke's equation is reduced to

$\frac{de{l}^2{v}_z}{del{r}^2}+\frac{1}{r}*\frac{del{v}_z}{\text{d}\text{e}\text{l}\text{r}}=\frac{1}{}\frac{dp}{(d)z}$

$($axis of the tube along which all the fluid particles flow $=z,$ radius $=R)$

Applying appropriate boundary conditions find out the velocity profile in the tube.

Where do you expect the velocity to be maximum?