Q.

Moment of inertia of a square plate of mass 'm ‘ and side ’a ' about the given axis is equal to (axis is in the plane of the plate and passing through its geometric centre).

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a

ma26

b

ma212

c

ma224

d

ma248

answer is B.

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Detailed Solution

Using perpendicular axis theoremIz=I+I⇒2I=ma26⇒I=ma212
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Moment of inertia of a square plate of mass 'm ‘ and side ’a ' about the given axis is equal to (axis is in the plane of the plate and passing through its geometric centre).