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Specific Weight of Liquid in Piezometer is the ratio of a body's weight P to its volume V. It represents the weight per unit volume of a fluid and is measured in Newton per Cubic Meter (N/m³).
The calculator uses the formula:
Where:
Explanation: The specific weight is calculated by multiplying the mass density of the fluid by the acceleration due to gravity.
Details: Specific weight is crucial in fluid mechanics and engineering applications. It helps in determining buoyancy forces, pressure distributions, and fluid behavior in various containers and systems.
Tips: Enter mass density in kg/m³ and acceleration due to gravity in m/s². Standard gravity is approximately 9.8 m/s². All values must be positive.
Q1: What is the difference between mass density and specific weight?
A: Mass density (ρ) is mass per unit volume (kg/m³), while specific weight (S) is weight per unit volume (N/m³). They are related by S = ρ × g.
Q2: Why is specific weight important in fluid mechanics?
A: Specific weight helps determine hydrostatic pressure, buoyant forces, and fluid stability in various engineering applications.
Q3: How does temperature affect specific weight?
A: Temperature changes affect fluid density, which in turn affects specific weight. Most fluids expand with increasing temperature, decreasing both density and specific weight.
Q4: What are typical specific weight values for common fluids?
A: Water at 4°C has specific weight of about 9800 N/m³, mercury has about 133,000 N/m³, and air has about 12 N/m³ at standard conditions.
Q5: Can this calculator be used for gases?
A: Yes, the formula applies to both liquids and gases, though gas density and specific weight are more sensitive to temperature and pressure changes.