To derive Bernoullis equation, we first calculate the work that was done on. Mathematically this means that any height that we have has to be divided by 2.31 in order to get psi. This pressure difference results in a net force on the fluid because the. This is due to the fact that it takes 2.31 feet of head to create 1 psi. In the first scenario we took the height and MULTIPLIED it by 0.433 while in the second scenario we took the height and DIVIDED it by 2.31. Note the minor difference in the way the formula is set up. Keep this in mind as later on in the chapter we’ll start to expand the concept and deal with the total area and eventually the total force.Īs stated previously when we add more height in terms of water the relationship between the height and the pressure remains constant. Regardless of the area at the bottom of the container we are only calculating the force on one square inch. In this case its pounds per square inch or psi. At this point we should remind ourselves that pressure is a force per unit area. We use this definition to find the force exerted on a horizontal sheet by considering the sheets area. easy to use a quadratic equation solver (e.g.
One thing I want to bring to your attention is the fact that we are measuring pressure. Vectors: displacement, velocity, acceleration and force scalars: mass.
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