Assertion : A judo fighter,in order to throw | vedclass

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Question

(A) The moment of inertia $I$ of a body is given by $I = \sum m_i r_i^2$,where $r_i$ is the distance of the mass element $m_i$ from the axis of rotati

Vedclass · Accepted Answer

If both $Assertion$ and $Reason$ are correct and the $Reason$ is a correct explanation of the $Assertion$.

Vedclass · Answer

(A) The moment of inertia $I$ of a body is given by $I = \sum m_i r_i^2$,where $r_i$ is the distance of the mass element $m_i$ from the axis of rotation.By bending the opponent and bringing their mass closer to the hip (the axis of rotation),the average distance $r$ decreases.As $I \propto r^2$,the moment of inertia of the opponent decreases significantly.$A$ smaller moment of inertia requires less torque to produce a given angular acceleration,making it easier for the judo fighter to rotate and throw the opponent.Thus,both the $Assertion$ and $Reason$ are correct,and the $Reason$ is the correct explanation.

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