Home
Back
Water Pressure Equation:
| From: | To: |
The water pressure equation P = ρ × g × h calculates the hydrostatic pressure at a certain depth in a fluid. This fundamental physics equation is used to determine pressure in gravity-fed water systems, tanks, and other fluid containers.
The calculator uses the pressure equation:
Where:
Explanation: The equation calculates the pressure exerted by a column of fluid due to gravity. The pressure increases linearly with depth and depends on the fluid's density.
Details: Accurate pressure calculation is crucial for designing water supply systems, determining pump requirements, ensuring proper flow rates, and maintaining system safety in various engineering applications.
Tips: Enter fluid density in kg/m³ (1000 for water), gravitational acceleration in m/s² (9.81 for Earth), and height in meters. All values must be positive numbers.
Q1: What is the standard value for water density?
A: The standard density of water is 1000 kg/m³ at 4°C. Density varies slightly with temperature.
Q2: Why is gravitational acceleration important?
A: Gravitational acceleration determines the weight of the fluid column. On Earth, it's approximately 9.81 m/s², but varies slightly with location.
Q3: How does height affect pressure?
A: Pressure increases linearly with height (depth). Doubling the height doubles the pressure at the bottom of the fluid column.
Q4: Can this calculator be used for other fluids?
A: Yes, simply input the appropriate density value for the specific fluid you're working with.
Q5: What are typical pressure units?
A: While Pascals (Pa) are the SI unit, pressure is often measured in bars (1 bar = 100,000 Pa) or psi (1 psi ≈ 6895 Pa) in practical applications.