Consider fully developed laminar flow in the annular space formed by the two concentric cylinders shown in the diagram for Problem 8.53, but with pressure gradient, @p/@x, and the inner cylinder...

Consider fully developed laminar flow in the annular space formed by the two concentric cylinders shown in the diagram for Problem 8.53, but with pressure gradient, @p/@x, and the inner cylinder stationary. Let r0 5 R and ri 5 kR. Show that the velocity profile is given by