An incompressible fluid is squeezed between two large circular discs by the downward motion of the upper disc $($the lower disk fixed$).$ Approximating the fluid flow as one dimensional radial flow $($i$.$e$.$ the fluid velocity is $V(r)$ only$)$ derive an expression, $V(r)$ in terms of the downward velocity of the disk, Vdisk. Side and X $-$section views shown.