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The density of a rod gradually decreases from one end to the other. It is pivoted at an end so that it can move about a vertical axis through the pivot. A horizontal force $F$ is applied on the free end in a direction perpendicular to the rod. The quantities, that do not depend on which end of the rod is pivoted, are :

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angular acceleration

angular momentum, when the rod completes one rotation

torque of the applied force

angular velocity when the rod completes one rotation

answer is D.

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Detailed Solution

$τ = F \times$ moment arm ; About both the ends, moment arm remains constant.

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