What is the SI unit of specific weight?
Specific Weight is defined as weight per unit volume. Weight is a force. The SI unit for specific weight is [N/m3].
What is the symbol of specific weight?
γ
The symbol of specific weight is γ (the Greek letter gamma).
How do you calculate specific weight?
Multiply the density by the acceleration of gravity (9.81) to calculate the specific weight. In our example, the specific weight is 840 x 9.81 = 8,240.4. Measure or obtain elsewhere the volume of the substance.
What is specific weight and what units in SI and English?
The SI unit for the specific weight is N/m3 while the English unit is lb/ft3. Specific gravity is simply the ratio of the specific weight of a given liquid to the specific weight of water at 4° C (γwater = 9.81 kN/m3 or 62.4 lb/ft3). This definition is helpful when comparing densities of different liquids.
Is specific weight Unitless?
The specific gravity is the density of a substance divided by the density of water. Density is measured in the units kg/m3. The density of water at 4.0°C is 1000 kg/m3. So, the specific gravity is a unitless number.
What is the unit of specific volume?
Specific volume is a property of materials, defined as the number of cubic meters occupied by one kilogram of a particular substance. The standard unit is the meter cubed per kilogram (m 3 /kg or m 3 · kg -1 ).
Is specific weight same as density?
Density and Specific Gravity are never the same, because Density has units and Specific Gravity is dimensionless, but they are numerically equal when three conditions are met: (1) Density is measured in grams per cubic centimeter, grams per milliliter, or kilograms per liter; (2) Density and Specific Gravity are …
What do you mean by specific weight?
Definition of specific weight : the weight of a substance per unit volume in absolute units equal to the density multiplied by the acceleration of gravity.
Why is sp gr Unitless?
Explanation: Specific gravity is a dimensionless quantity; that is, it is not expressed in units. Materials with a specific gravity less than 1 are less dense than water, and will float on the pure liquid; substances with a specific gravity more than 1 are more dense than water, and will sink.
What is specific weight in fluid mechanics?
In fluid mechanics, specific weight represents the force exerted by gravity on a unit volume of a fluid. For this reason, units are expressed as force per unit volume (e.g., N/m3 or lbf/ft3). Specific weight can be used as a characteristic property of a fluid.
Why do we measure specific weight?
Specific weight can be used in civil engineering and mechanical engineering to determine the weight of a structure designed to carry certain loads while remaining intact and remaining within limits regarding deformation.
What are the units for measuring specific weight?
– γs is the saturated unit weight of the material – γw is the unit weight of water – Gs is the specific gravity of the solid – e is the void ratio
What is the formula for specific weight?
γ (specific weight) = w (ordinary weight) / V (volume of the substance), or what is the same: γ = w / V = mg / V, where m is the mass of the substance and g is the acceleration of gravity (commonly considered as 9.8 m / s 2 ). From there it is concluded that: γ = pg, where p is the density of the substance.
What are the typical units for weight?
Mineralogy of the soil particles (e.g.
The SI unit for the specific weight is N/m 3 while the English unit is lb/ft 3. Specific gravity is simply the ratio of the specific weight of a given liquid to the specific weight of water at 4° C (γ water = 9.81 kN/m 3 or 62.4 lb/ft 3 ). This definition is helpful when comparing densities of different liquids.