Question

$1{\mathrm{cm}}^3$ block of wood weighs lesser than $1{\mathrm{cm}}^3$ block of iron. Explain.

Answer 1

1. The density of a substance is defined as its mass per unit volume.
2. Mathematically it can be given as, $\mathrm{Density}\mathrm{of}\mathrm{a}\mathrm{substance}=\frac{\mathrm{Mass}\mathrm{of}\mathrm{the}\mathrm{substance}}{\mathrm{Volume}\mathrm{of}\mathrm{the}\mathrm{sustance}}$
3. It suggests that for equal volume, a higher mass of a body possesses a higher density.
4. Since the density of iron is more than the density of the wood, it means the iron block has more mass than wood of the same volume.
5. Due to higher mass, the iron block of volume $1{\mathrm{cm}}^3$ weighs more than the wood of the same volume.