A weight is placed on a hydraulic lift as shown in Figure Q4. The combined mass of the weight and piston is 600 kg. A force F is applied at the left cylinder to support the weight in equilibrium. Given that the hydraulic oil density is 850kg/m', the diameter of the smaller piston and large piston are 50mm and Im respectively. Determine: F Figure Q4 A W 0.9m B 1.5m Hydraulic oil C a) the gauge pressure at the bottom of piston (point C); b) the gauge pressure at the bottom of piston at left cylinder (point A); c) the value of F. d) Comment to the output force if the diameter of piston at point A is increased.