Q: With reference to figure of a cube of edge a and mass m, state whether the following are true or false. (0 is the centre of the cube.)

(a) The moment of inertia of cube about z-axis is I_{z} = I_{x} + I_{y}

(b) The moment of inertial of cube about z’-axis is I’_{z} = I_{z} + ma^{2}/2

(c) The moment of inertia of cube about z”-axis is = I_{z} + ma^{2}/2

(d) I_{x} = I_{y}

Ans: (a) , (b) & (d)