Air flows from a pipe into the region between a circular disk and a cone as shown in Fig...

Air flows from a pipe into the region between a circular disk and a cone as shown in Fig. P4.30. The fluid velocity in the gap between the disk and the cone is closely approximated by V=V₀R²/r², where R is the radius of the disk, r is the radial coordinate, and V₀ is the fluid velocity at the edge of the disk. Determine the acceleration for r = 0.5 and 2 ft if V₀ = 5 ft/s and R = 2 ft.