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QJEEM21Ph9b04: JEE Main 2021 Physics - Class 11 JEEM21Ph9b04 Solution: Moment of inertia of a square plate of side l about the axis…

Moment of inertia of a square plate of side l about the axis passing through one of the corner and perpendicular to the plane of square plate is given by :

Multiple Choice Options

  • A Ml26{{M{l^2}} \over 6}
  • B Ml2{M{l^2}}
  • C Ml212{{M{l^2}} \over {12}}
  • D 23Ml2{2 \over 3}M{l^2}

Step-by-Step Verified Solution

According to perpendicular Axis theorem.

JEE Main 2021 (Online) 27th August Morning Shift Physics - Rotational Motion Question 85 English Explanation
Ix + Iy = Iz

Iz ⇒\Rightarrow ml23+ml23{{m{l^2}} \over 3} + {{m{l^2}} \over 3}

=2ml23= {{2m{l^2}} \over 3}

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