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Specific Weight Formula:
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The Specific weight of liquid, also known as the unit weight, is the weight per unit volume of the liquid. It represents the force exerted by gravity on a unit volume of fluid and is an important property in fluid mechanics and engineering calculations.
The calculator uses the specific weight formula:
Where:
Explanation: This formula calculates the specific weight by dividing the gauge pressure at a point in the liquid by the height of the liquid column above that point.
Details: Calculating specific weight is crucial for various engineering applications including hydraulic systems, buoyancy calculations, fluid dynamics analysis, and structural design involving fluids. It helps determine the weight distribution and pressure characteristics in fluid containers and systems.
Tips: Enter gauge pressure in Pascals (Pa) and height in meters (m). Both values must be positive numbers greater than zero. The calculator will compute the specific weight in Newtons per cubic meter (N/m³).
Q1: What is the difference between specific weight and density?
A: Specific weight is weight per unit volume (N/m³), while density is mass per unit volume (kg/m³). Specific weight includes the effect of gravity.
Q2: What are typical specific weight values for common liquids?
A: Water at 4°C has a specific weight of approximately 9810 N/m³. Other liquids vary based on their density and gravitational acceleration.
Q3: How does temperature affect specific weight?
A: Temperature affects density, which in turn affects specific weight. Most liquids expand with increasing temperature, decreasing their specific weight.
Q4: Can this formula be used for gases?
A: While the same principle applies, gases are compressible and their specific weight varies significantly with pressure and temperature changes.
Q5: What are the units of specific weight?
A: In the SI system, specific weight is measured in Newtons per cubic meter (N/m³). In imperial units, it's typically pounds per cubic foot (lb/ft³).