A block is being pulled over a table by a weight W=10N. The block is in contact with an oil film with a viscosity of 5x10^-4 Pa*s. The bottom area of the block is A=1m^2, and the thickness of the oil film is h=.01mm. Find the steady velocity U of the block. Assume a linear velocity distribution in the oil film and neglect the cord weight, pulley friction and air resistance.