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A uniform square plate has a small piece...

A uniform square plate has a small piece `Q` of an irregular shape removed and guled to the centre of the plate leaving a hole behind in figure. The moment of inertia about the z-axis is then,
.

A

increased

B

decreased

C

the same

D

changed in unpredicted manner

Text Solution

Verified by Experts

The correct Answer is:
B
in the given diagrams , when the small piece Q removed and glued to the centre of the plate , the mass comes closer to the z- axis , hence , moment of inertia decreases.
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