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The Specific weight of liquid is also known as the unit weight, is the weight per unit volume of the liquid. For Example - Specific weight of water on Earth at 4°C is 9.807 kN/m3 or 62.43 lbf/ft3.
The calculator uses the formula:
Where:
Explanation: This formula calculates the specific weight of a liquid based on the force exerted on a cylinder and the dimensions of the container section.
Details: Calculating specific weight is crucial for fluid mechanics applications, structural design of containers, and understanding fluid behavior under various conditions.
Tips: Enter force on cylinder in Newtons, width of section in meters, and height of crack in meters. All values must be positive numbers greater than zero.
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). They are related by gravity: specific weight = density × gravity.
Q2: Why is the height of crack squared in the formula?
A: The squared term accounts for the area moment and distribution of force across the cross-sectional area of the container.
Q3: What are typical specific weight values for common liquids?
A: Water: 9.81 kN/m³, Mercury: 133 kN/m³, Gasoline: 6.6-7.5 kN/m³, depending on temperature and composition.
Q4: How does temperature affect specific weight?
A: As temperature increases, most liquids expand, decreasing their density and specific weight. Water has maximum density at 4°C.
Q5: Can this formula be used for gases?
A: While the concept of specific weight applies to gases, this particular formula is designed for liquids in container applications and may not be appropriate for gases.