Question

Two identical rods of length L, mass M are riveted at right angles at their mid points Moment of inertia of the system about the perpendicular axis passing through the centre is

• A. $ML^2$
• B. $\frac{ML^2}{12}$
• C. $\frac{ML^2}{4}$
• D. $\frac{ML^2}{6}$

Answer 1

Answer: (D)

$\frac{ML^2}{6}$

Answer 2

$I_{net} = I_1 + I_2$
$= 2I$
$= 2 \frac{ML^2}{12}$
$= \frac{ML^2}{6}$