Definition of relative density
- Relative density is the ratio of the density of a substance to the density of a standard reference material
- It is also known as specific gravity
- It is a dimensionless quantity
Use in determining buoyancy
- Relative density helps determine the buoyancy of an object in different fluids
- Objects with a relative density less than 1 float in the fluid
- Objects with a relative density greater than 1 sink in the fluid
Mathematical calculation
- Mathematically, relative density is calculated as the density of the substance divided by the density of water at 4°C
- The formula is: Relative density = density of substance / density of water at 4°C
Applications
- Relative density is used in various industries including chemistry, metallurgy, and geology
- It is crucial for quality control of materials and in manufacturing processes
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