When a piece of iron or mass 78 gm is put in a graduated cylinder containing 100 cm cube of water the reading of the cylinder become 110cm cube Calculate the density of iron.

Ro = 7.8 [g/cm³]

Explanation:

According to the principle of Archimedes, the volume of a body immersed in a liquid is equal to the volume displaced by water. That is, in this problem The displacement volume is equal to the new volume minus the original volume.

We now know that density is defined as the relationship between mass and volume.

where:

Ro = density [g/cm³]

m = mass = 78 [g]

Vd = displacement volume [cm³]

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