70 kpa Air pressure was measured on the surface of the water in the closed container shown in the figure. One side of the container, one side circular with a diameter of 15 cm, fixed with a hinge There is a mouth closed with a lid. The horizontal axis of the hinge is 3 m below the water surface. exists. on the hinge to keep the door closed. Determine the minimum torque that must be applied. Neglect the door weight and friction on the hinge.