In general, the density of water is 1000 kg/m3. Density is a measure of mass in a specific volume. Density is equal to the mass divided by the volume of an object, which can be expressed by the symbol ρ (pronounced rou). In the international system of units and China's legal units of measurement, the unit of density is kilogram per cubic meter, and the symbol is kg/m3.

Extended data

The relationship between density and buoyancy;

1. Objects in water

ρ body ρ water, body sinks.

2. For any liquid

ρ object ρ liquid, object sinks (or sinks)

When ρ object ≤ρliquid (object floats or suspends)

Volume of object in water: volume of object = ρ Object: ρ liquid.

When ρ object = ρ water (object) is suspended, the volume of the object in water: the volume of the object = 1: 1.