A liquid has a specific gravity of 0.8. Determine its specific weight (in N/m) and density (in kg/m). A 0.5 ft by 1.5 ft very thin plate is being pulled in the middle of the two stationary plates (Figure below) at a speed of 1 ft/s. The 0.5 in. space between the two plates is filled with lubricating oil with a viscosity of 0.0065 lb.-s/ft. How much force (F) is required to pull the thin plate. 0,3 in