The specific weight of a fluid, sometimes referred to as the unit weight, is the force exerted by gravity on a unit volume of the fluid. It is denoted by the symbol $\gamma$ (gamma) and is calculated as the product of the fluid’s density ($\rho$) and the acceleration due to gravity ($g$). This equation essentially tells us how much force is exerted by gravity on a unit volume of the fluid. It’s a crucial parameter in various engineering applications, particularly in fluid mechanics. The specific weight equation is:

Where:

• $\gamma$ is specific weight,
• $\rho$ is density of the fluid,
• $g$ is acceleration due to gravity.