1-19. Solar panels are installed on a rectangular flat roof. The roof is 15 feet by 30 feet, and the mass of the panels and framing is 900 lb. A. Assuming the weight of the panels is evenly dis- tributed over the roof, how much pressure does the solar panel array place on the roof? B. The density of fallen snow varies; here assume its -30% of the density of liquid water. Estimate the total pressure on the roof if 4 inches of snow fall on top of the solar panels.
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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