A pipe has a diameter of 24 cm at one end which is located at 1.5 m above the ground, and a diameter of 12 cm at the other end which is 4.0 m above the ground as shown below. Water is pumped at a pressure of 120,000 Pascals into the pipe at the ground level with a speed of 1.0 m/s. What is the water pressure as it exits from the other end? Assume that the density of water is 1,000 kg/m³ and g is 9.8 m/s².) Hint: Determine first the speed at the exit and then use Bernoulli's Equation. V2 = ? V, = 1.0 m/s P2 = ? P1 = 120,000 Pa d, = 24 cm hi = 1.5 m d2 = 12 cm h2 = 4.0 m
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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