Determine the resultant force that both of these liquids exert on the side abc of the tank.8/28/2023 ![]() Looking now at forces on vertical walls, they do indeed only depend on the pressure - because the only force they are countering is the force due to the same pressure on the opposite wall of the vessel, regardless of the distance between these walls. Again if you sum all these vertical forces they add up to the weight. If the walls are not straight, then a component of the pressure can result in a vertical force. This makes sense because in such a vessel the only wall that can provide a force to support the liquid (counteract gravity) is the floor. ![]() For the bottom of a vessel with straight walls that means that the force is indeed equal to the weight of the liquid. The force that a liquid exerts on the wall of a vessel is equal to the product of pressure and area. ![]() Your question seems predicated on a misconception.
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