For example, the specific gravity of 0.84 corresponds to the density of 840 (0.84 x 1000) kg/cubic meters. 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.
How do you calculate mass from specific weight?
In the imperial system, multiply by 1.94 slug/ft 3 , which is the density of water in slugs. Once you know density, you can calculate mass per unit volume. All you have to do is multiply that density by the volume of the solid or liquid to find the mass of the solid or liquid.
Is specific gravity the same as specific weight?
The specific gravity stands for a dimensionless unit that defines the ratio of density of a substance to the density of water. ... The specific weight corresponds to the weight per unit of the volume and can be calculated from the specific gravity.
How do you calculate specific gravity from density?
Specific gravity is a ratio of the density of a substance to the density of a reference substance, usually water. Since the density of water is one gram per cubic centimeter, you calculate specific gravity by dividing the density of a substance by one gram per cubic centimeter .
How do you calculate specific gravity?
The density of the object (x) divided by the density of water (1) gives us the specific gravity 0.8.
How do you use specific gravity?
Specific gravity can be used to determine if an object will sink or float on water . The specific gravity of water is equal to one. If an object or liquid has a specific gravity greater than one, it will sink. If the specific gravity of an object or a liquid is less than one, it will float.
What does a higher specific gravity mean?
High specific gravity suggests that the urine is too concentrated . Conditions that cause high specific gravity include: dehydration. diarrhea or vomiting resulting in dehydration. congestive heart failure.
What is the formula to 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.
What is the specific weight of steel?
It is also called the specific weight of steel. Its SI unit is kg/m3. Unit weight of steel is 7850 kg/m3 .
What is the specific weight of water?
A commonly used value is the specific weight of water on Earth at 4 °C (39 °F), which is 9.807 kilonewtons per cubic metre or 62.43 pounds-force per cubic foot . The terms specific gravity, and less often specific weight, are also used for relative density.
Is density equal to specific gravity?
Although the two terms often are used interchangeably, there is a technical difference between specific gravity and density. Density is defined as the mass per unit volume of a substance. ... When the specific gravity is defined based on water at 4°C, then the specific gravity is equal to the density of the liquid.
What does a specific gravity of 1 indicate?
Relative density, or specific gravity, is the ratio of the density (mass of a unit volume) of a substance to the density of a given reference material. ... If the relative density is exactly 1 then the densities are equal ; that is, equal volumes of the two substances have the same mass.
How do you calculate the specific gravity of water?
Calculate the object’s specific gravity by dividing its density by the density of water at 4 degrees Celsius . It follows that pure water has a specific gravity of 1 or close to 1 depending on temperature.
What is the purpose of specific gravity?
4.1 Specific gravity is an important property of fluids being related to density and viscosity. Knowing the specific gravity will allow determination of a fluid’s characteristics compared to a standard, usually water , at a specified temperature.
What does specific gravity tell us?
Urinary specific gravity (SG) is a measure of the concentration of solutes in the urine . It measures the ratio of urine density compared with water density and provides information on the kidney’s ability to concentrate urine. A urinary specific gravity measurement is a routine part of urinalysis.
What are the factors affecting specific gravity?
A number of factors influence density or specific gravity of milk such as addition or removal of water, cream or other components etc. and temperature and pressure used during the processing of milk. Density of milk is influenced by the combined effect of densities of its various components.
