For identical rods each of mass m and length l make a square frame in xy plane as shown. Calculate its momen of inertia about the x-axis.

Options

A. `5/3ml^(2)`
B. `4/3ml^(2)`
C. `ml^(2)`
D. None of these

Answer

A

Explanation

`I=I_(1)+I_(2)+I_(3)+I_(4)`
`=(mL^(2))/3+(0+mL^(2))+(mL^(2))/3+0`
`I=5/3mL^(2)`