Question

How can we know the density of a random " Form " .
(By using archemedies principle)

Answer 1

Dear Student ,
We know that the density of a material is , $Density\left(\rho \right)=\frac{Mass\left(M\right)}{Volume\left(V\right)}$
Now from the Archimedes principle let a body of weight W₁ in air is immersed in a liquid of density $\rho$ then after fully immersing the body in the liquid the weight of the body becomes W₂ .
Now the volume of the liquid displaced is , $V=\frac{W_1-W_2}{\rho }$ = volume of the body .
Now the density of the body is , $D=\frac{W_1}{V}=\frac{W_1\times \rho }{W_1-W_2}$
Regards