AN $1\mathrm{.}2$ I can solve a fundamental fluid mechanics problems involving viscosity

A very thin, rectangular plate with $4f{t}^2$ total surface area is positioned between two large plane surfaces, which are $1-$in apart from one another. The space between the objects is filled with a liquid of absolute viscosity of $0\mathrm{.}02lbf-s\frac{ec}{f{t}^2}.$ Assuming linear velocity gradients, what force is required to pull the thin plate at a constant speed of $1\frac{ft}{sec}?$

Plane surface $($stationary$)$

Plate

Plane surface $($stationary$)$