Three identical rods, each of mass m and length l are placed along x, y and z axis respectively. One end of each rod is at the origin. The moment of inertia of the rods x-axis will be

Options

A. `ml^(2)`
B. `(5ml^(2))/(3)`
C. `(2ml^(2))/(3)`
D. `(ml^(2))/(3)`

Answer

C

Explanation

`I=I_(e )+I_(e )=(ml^(2))/(3)+(ml^(2))/(3)=(2ml^(2))/(3)`