Mass
Mass, abbreviated as m, is the amount of matter an object has. It is the property of a body that causes it to have weight in a gravitational field. It is sometimes used interchangeably in place of weight. Mass is a scalar quantity having magnitude and is independent of any specific direction.
Weight is a vector quantity that depends on the gravity at a specific location. The mass of an object is different from its weight, which is the force exerted on the object by gravity. Mass is a fundamental property of matter, whereas weight is dependent on the object's mass and the acceleration due to gravity.
Mass Types
 Gravitational Mass  The mass of an object as measured by its interaction with gravity, it is equal to its inertial mass.
 Internal Mass  The mass of an object measured by its resistance to acceleration when a force is applied.
 Invariant Mass  The inferred value of the mass is independent of the reference frame in which the energies and momentum are measured so that the mass is invariant.
 Mass Diffusivity  A proportionality constant between the molar flux due to molecular diffusion and the gradient in the concentration of the species.
 Molar Mass  The mass of a given compound equal to its molecular mass in gram.
 Relativity Mass  The mass of a body in motion relative to the observer.
 Rest Mass  Rest mass of a body is measured when the body is at rest and motionless and is also relative to an observer moving or not moving.
Mass formula 

\( m \;=\; \rho \; V \) (Mass) \( \rho \;=\; m \;/\; V \) \( V \;=\; m \;/\; \rho \) 

Solve for m
Solve for ρ
Solve for V


Symbol  English  Metric 
\( m \) = mass  \(lbm\)  \(kg\) 
\( \rho \) (Greek symbol rho) = density  \(lbm \;/\; ft^3\)  \(kg \;/\; m^3\) 
\( V \) = volume  \(ft^3\)  \(m^3\) 
Tags: Mass