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Specific Weight Formula:
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Specific weight (also known as unit weight) is the weight per unit volume of a material. It is represented by the Greek letter γ (gamma) and is typically expressed in newtons per cubic meter (N/m³) in the SI system.
The calculator uses the specific weight formula:
Where:
Explanation: The formula calculates how much weight is distributed in a given volume of material, which is important in various engineering and physics applications.
Details: Specific weight is crucial in fluid mechanics, civil engineering, and material science. It helps determine buoyancy forces, structural loads, and material selection for various applications.
Tips: Enter weight in newtons (N) and volume in cubic meters (m³). Both values must be positive numbers greater than zero for accurate calculation.
Q1: What's the difference between specific weight and density?
A: Density is mass per unit volume (kg/m³), while specific weight is weight per unit volume (N/m³). They are related by the equation γ = ρ × g, where g is gravitational acceleration.
Q2: How does specific weight vary with location?
A: Since weight depends on gravity, specific weight values change slightly with altitude and latitude, though this variation is often negligible for most practical applications.
Q3: What are typical specific weight values for common materials?
A: Water has a specific weight of approximately 9,810 N/m³, steel is about 78,500 N/m³, and concrete ranges from 23,000 to 25,000 N/m³.
Q4: Why is specific weight important in fluid mechanics?
A: Specific weight determines hydrostatic pressure and buoyancy forces, which are fundamental concepts in fluid statics and dynamics.
Q5: Can specific weight be used for gases?
A: Yes, specific weight applies to all materials, including gases. For gases, it's particularly important in applications like HVAC design and aerodynamics.