The mass of an iron bar with a volume of 0.002 is 15.6 kg. What is the density of iron?

These tasks: V (volume of an iron bar) = 0.002 m3; m (mass of the considered iron bar) = 15.6 kg.

The density of an iron bar can be determined by calculating the ratio of its mass to the occupied volume: ρl = m / V.

Let’s make a calculation: ρzh = 15.6 / 0.002 = 15600/2 = 7800 kg / m3.

Answer: According to the calculation, the density of iron is 7800 kg / m3 (corresponds to the table value).