Find the mass of the substance

The mass of a substance or weight is expressed through the product of the volume and density of the substance.

M = V x density. Everything in space where gravity acts has weight. For this reason, the mass (weight) of construction details, buildings needs to be calculated and considered to ensure the reliability of the object.

Weight (mass) is present in everything. It may seem weightless at first glance, but air with a volume of one cubic meter weighs 1 kg 293 g, and a cubic meter of iron – 7870 kg. The property of mass (weight) concerns not only everything on Earth but also planets, stars, and other cosmic bodies.