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Water Gauge Pressure Formula:
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Water gauge pressure is the pressure exerted by a column of water at a specific depth. It is calculated using the formula P_g = ρ·g·h, where ρ is the density of water, g is gravitational acceleration, and h is the height of the water column.
The calculator uses the water pressure formula:
Where:
Explanation: This formula calculates the pressure at the bottom of a water column due to the weight of the water above it.
Details: Accurate water pressure calculation is crucial for hydraulic engineering, plumbing systems, underwater construction, and various scientific applications where fluid pressure needs to be determined.
Tips: Enter water density in kg/m³ (1000 for pure water), gravitational acceleration in m/s² (9.81 for Earth), and height/depth in meters. 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, but this varies with temperature and salinity.
Q2: How does temperature affect water pressure calculations?
A: Temperature affects water density. Warmer water is less dense, which results in slightly lower pressure for the same depth compared to colder water.
Q3: What is the gravitational acceleration value used?
A: Standard Earth gravity is 9.80665 m/s², but 9.81 m/s² is commonly used for calculations. This value varies slightly at different locations on Earth.
Q4: Can this formula be used for other fluids?
A: Yes, the same formula applies to any fluid, but you must use the specific density of that fluid instead of water density.
Q5: How does water pressure change with depth?
A: Water pressure increases linearly with depth. For every meter of depth in freshwater, pressure increases by approximately 9810 Pascals (9.81 kPa).