If you want to find the net force when you know acceleration and mass. In this case, the force would be the weight the liquid exerts on the bottom of the tank due to gravity. I clarified it to clear the misunderstanding(if any) of future viewers of this thread. You can calculate the hydrostatic pressure of the liquid in a tank as the force per area for the area of the bottom of the tank as given by pressure force/area units. PS: I know that you are perfectly aware of this from your first post on 8th September. Vertical section may not fail if we design the tank as per the pressure calculated by your method but bottom horizontal section may fail. This calculation is generally not useful for designing thickness of tanks, for the tank should be designed for the maximum pressure possible in the system i.e at the bottom most section of the tank. This calculation is generally used when we have to design hinged (or other)closures. Secondly, integration yields net pressure and net force on the tank wall and this acts at about 2/3rd height from the top of the tank. That is why I considered P 0 as redundant. In my experience, all water tanks are atmospheric. You come up with better knowledge whenever you are teased, yet never losing your temper.Ĭoming to the OP, I presumed, here, many things. I like even being devil's advocate with you.
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