Two infinite parallel horizontal surfaces are separated by a film of SAE 10W oil atT = 10 C that is d = 0.0144 in. thick. The upper surface moves with speed V. Th e lower surface is stationary and contains a spring-mounted plate of area A =0.725 ft?.The horizontal force on the plate is F = 0.155 lbf. Calculate the speed of the upper plate.

Fig: 1