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Water Pressure Formula:
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The formula for calculating water pressure is P_g = ρ g h, where P_g is the water pressure in pascals (Pa), ρ is the density of water in kg/m³, g is the acceleration due to gravity in m/s², and h is the height of the water column in meters.
The calculator uses the water pressure formula:
Where:
Explanation: This formula calculates the pressure exerted by a column of water at a specific depth, based on the principles of fluid statics.
Details: Calculating water pressure is essential in various engineering applications, including plumbing system design, dam construction, underwater exploration, and hydraulic systems. It helps determine the force exerted by water at different depths, which is crucial for structural integrity and safety.
Tips: Enter the density of water (typically 1000 kg/m³ for pure water), acceleration due to gravity (typically 9.81 m/s² on Earth), and the height of the water column. All values must be positive numbers.
Q1: What is the standard density of water?
A: The density of pure water at 4°C is approximately 1000 kg/m³. Density can vary slightly with temperature and impurities.
Q2: Does this formula work for other fluids?
A: Yes, the formula P = ρ g h works for any fluid, but you need to use the correct density value for that specific fluid.
Q3: How does water pressure change with depth?
A: Water pressure increases linearly with depth. For every meter of depth, pressure increases by approximately 9.81 kPa (assuming water density of 1000 kg/m³).
Q4: What units are used for water pressure?
A: The SI unit for pressure is pascal (Pa), but other common units include kilopascal (kPa), bar, and pounds per square inch (psi).
Q5: How does atmospheric pressure affect water pressure calculations?
A: The formula P_g = ρ g h gives the gauge pressure (pressure above atmospheric). To get absolute pressure, you would need to add atmospheric pressure to the result.