Principle

In the previous experiments on determination of mass and volume
(ME 1.3 and ME 1.4), the students have learned that both metal
columns have the same volume but different masses. They know that
the two objects consist of iron and aluminium. Obviously, the
two materials differ in one property. In terms of physics,
this property is called density; it is defined as the quotient of
mass and volume:

ρ = m/V 
in g/cm3

The students are to determine the mass of four
solid objects by weighing them. The volumes of the regularly
shaped objects are to be established by measuring them with
the vernier calliper and then calculating, using
V = l  × w 
× h ; the volume of the mass piece by using the
immersion method.