Calculate the mass of a body whose volume is 2 m³ and relative density is 0.52.

As we know,

Mass = density x volume

Given,

volume = 2 m³

R.D. is 0.52

Now,

R.D. = $\dfrac{\text {Density of substance in kg m}^{-3}}{\text{1000 kg m}^{-3}}$

Substituting the values in the formula for R.D. we get,

0.52 = $\dfrac{\text {Density of body}}{\text{1000 kg m}^{-3}}$

Therefore,

Density of body = 0.52 x 10³ kg m^-3

Substituting the values in the formula for mass, we get,

$\text {Mass} = 0.52 \times 1000 \times 2 \\[0.5em] \Rightarrow \text {Mass} = 1040 \text {kg} \\[0.5em]$

Therefore, mass of body = 1040 kg