question_answer 36)

                  A uniform square plate has a small piece Q of an irregular shape removed and glued to the centre of the plate leaving a hole behind (Fig.). The moment of inertia about the z-axis is then (a) Increased     (b) decreased (c) the same       (d) changed in unpredicted manner                

Answer:

                  (b) \[I=M{{r}^{2}}\]