A cyclindrical rod of length 1.2 m is made of three materials. The first part 0.5 m is made of iron, the second part 0.3 m is of copper and the last 0.4 m is of aluminimum. If the densities of iron, copper and aluminimum are 7.9xx10^(3)kg//m^(3), 8.9xx10^(3), 2.7xx10^(3)kg//m^(3) respectively the centre of mass of the rod from right end of the aluminium rod is

A cyclindrical rod of length 1.2 m is made of three materials. The fir

1.	A cyclindrical rod of length 1.2 m is made of three materials. The first part 0.5 m is made of iron, the second part 0.3 m is of copper and the last 0.4 m is of aluminimum. If the densities of iron, copper and aluminimum are 7.9xx10^(3)kg//m^(3), 8.9xx10^(3), 2.7xx10^(3)kg//m^(3) respectively the centre of mass of the rod from right end of the aluminium rod is
Answer» `0.5` 0.7 m 0.9 m 1.2 m ANSWER :B