The buoyancy formula of physics is

The buoyancy formula of physics is

According to the force balance when an object floats or floats, g = f floats; g = mass of the object, g = density of the object, f floats = liquid density, g * V row, so: density of the object, v = density of the liquid, g * V row, that is, density of the object, v = density of the liquid, V row / V row, then the formula is derived (density of the object / density of the liquid, V row / V row)