Question

If water (w=10kn/m) stands at the level shown on the left of the gate, what vertical pull s applied at b will be required to open the gate against water pressure

Answer 1

If you are at sea level, each square inch of your surfaceis subjected to a force of 14.6 pounds. The pressureincreases about one atmosphere for every 10 meters of water depth. At a depth of 5,000 meters thepressure will be approximately 500 atmospheres or 500 times greater than the pressure at sea level.