a vertical gap 23.mm wide of infinite extent contains oil of specific gravity 0.9 abd viscosity 2.5 N-s/m2. a metal plate 1.5 * 1.5 *1.5 m wieghing 50N is to be lifted through the gap at a constant speed of 0.1 m/s . estimate the force required to lift the plate?
a vertical gap 23.mm wide of infinite extent contains oil of specific gravity 0.9 abd viscosity 2.5 N-s/m2. a metal plate 1.5 * 1.5 *1.5 m wieghing 50N is to be lifted through the gap at a constant speed of 0.1 m/s . estimate the force required to lift the plate?