Two rods of equal mass m and length l lie along the x & y axis with their centres origin. What is the moment of inertia of both about the line x = y.

Two rods of equal mass m and length l lie along the x & y axis with th

1.	Two rods of equal mass m and length l lie along the x & y axis with their centres origin. What is the moment of inertia of both about the line x = y.
Answer» Solution :by PERPENDICULAR axis theorm `I_(zz) = (1)/(12) m l^(2) + (1)/(12) m l^(3) I_(zz) = (1)/(6) ml^(2)` `I_(1) + I_(1) + I_(zz)` (By symmetry) `2I_(1) = (1)/(6) ml^(2)` `I_(1) = (1)/(12) ml^(2)`. .