Set up an integral for fluid force against the vertical plate submerged in a fluid with weight density d as figure below, where a = 12 and d = 2. Set up the coordinate such that the origin is at the bottom of the plate and the x-axis is horizontal and the y-axis is upward. Total fluid force exerted on the plate is given by the formula F = , ShL(h)dy where the limits of integration are a = b = and the depth h = and the length at the depth h L(h) =
Fluid Pressure
The term fluid pressure is coined as, the measurement of the force per unit area of a given surface of a closed container. It is a branch of physics that helps to study the properties of fluid under various conditions of force.
Gauge Pressure
Pressure is the physical force acting per unit area on a body; the applied force is perpendicular to the surface of the object per unit area. The air around us at sea level exerts a pressure (atmospheric pressure) of about 14.7 psi but this doesn’t seem to bother anyone as the bodily fluids are constantly pushing outwards with the same force but if one swims down into the ocean a few feet below the surface one can notice the difference, there is increased pressure on the eardrum, this is due to an increase in hydrostatic pressure.
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