The moment of inertia of a thin square plate ABCD of uniform thickness about an axis passing through the centre O and perpendicular to the plate.

Q: The moment of inertia of a thin square plate ABCD of uniform thickness about an axis passing through the centre O and perpendicular to the plate. Where I1 , I2 , I3 , I4 are moments of inertia about axes 1 , 2 , 3 and 4 which are in the plane of the plate.

Numerical

(a) I1 + I2

(b) I3 + I4

(c) I1 + I3

(d) I1 + I2 + I3 + I4

Ans: (a) , (b)