please solve this problem

VO 4. (15 points) As shown in the figure, for the fluid between the plates to flow upward, the velocity v of the plates must be large enough to overcome the effect of gravity. Assume that there is a fluid with a specific gravity of 1 and a viscosity of 1 CP between the plates with a 1 mm gap, and the pressure drop compared to gravity is negligible. a) the minimum upward movement of the moving plate required for the fluid to flow upward Velocity b) The velocity of the fluid at the mid-plate position when this minimum velocity is maintained c) Shear stress of the fluid at the stationary plate, moving plate, and intermediate position stress) However, the equation of motion is as follows. +0. + 8