3. A fluid is flowing between two stationary plates on a sloped surface against gravity. The pressures Pi and P2 are measured at two points separated by the distance L,

and the plates are separated by a distance d. Assume that the plates extend far enough in the z-direction (Az) and therefore the z-components can be ignored. Determine the equation for the velocity profile, va.between the two plates using the Navier Stokes equations. State your assumptions.