Question

Volume of an object is 20 cm³ and the mass in 50 g. Density of water is 1 g cm^$-$3. Will the object float on water or sink in water?

Answer 1

Given:
Volume of object = 20 cm³
Mass of object = 50 g
Density of object = $\frac{\mathrm{Mass}\mathrm{of}\mathrm{object}}{\mathrm{Volume}\mathrm{of}\mathrm{object}}=\frac{50}{20}=2.5\mathrm{g}/{\mathrm{cm}}^3$
Now, we know density of water = 1 g/cm³
Since, density of object > density of water, therefore the object is going to sink in water.