A uniform square plate has a small piece \(Q\) of an irregular shape removed and glued to the center of the plate leaving a hole behind in the figure. The moment of inertia about the \(\mathrm{z}\)-axis is then
1. | increased |
2. | decreased |
3. | the same |
4. | changed in unpredicted manner |
With reference to the figure of a cube of edge a and mass m, the following statements are given. (O is the centre of the cube).
(a) The moment of inertia of the cube about the z-axis is
(b) The moment of inertia of cube about z'-axis is
(c) The moment of inertia of cube about z"-axis is
(d)
Choose the correct statements:
1. (a, c)
2. (a, d)
3. (b, d)
4. (b, c)