Piston having a diameter of 5.48 inches and a length of 9.50 in slides downward with a velocity, V, through a vertical pipe. The downward motion is resisted by an oil film between the piston and the pipe wall. The film thickness is 0.002 inches and the cylinder weighs 0.5 lb. Compute the velocity, V if the oil viscosity is 0.016 lb*s/ft