what is Specific Weight?
Specific weight or Weight density of a fluid is the ratio between the weight of a fluid to its volume. Thus weight per unit volume of a fluid is called Specific weight and it is denoted by w.
Thus mathematically, w = weight of fluid / volume of fluid
= (mass of fluid x acceleration due to gravity) / volume of fluid
= Density x g
Therefore, w = ρ g
The value of Specific Weight or Weight density (w) for water is 9.81 x 1000 N/m^3 in SI units. CLICK HERE
what is Density or Mass Density?
Density or Mass Density of a fluid is defined as the ratio of the mass of a fluid to its volume. Thus mass per unit volume of a fluid is called Density. It is denoted by the symbol of ρ (rho). The unit of Mass Density in SI unit is kg/m^3. CLICK HERE
The Density of liquid may be considered as constant while that of gases changes with the variation of pressure and temperature.
Mathematically, Mass Density is written as
ρ = mass of fluid / volume of fluid
The value of Density of water is 1 gm/cm^3 or 1000 kg/m^3 .CLICK HERE FOR MORE
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