# Angular Momentum Observation!

**Classical Mechanics**Level 4

A thin rod of mass '\(m\)' and length '\(l\)' is rotating in horizontal plane with constant angular velocity about a vertical axis \(AA'\). If there are three points \(O, 1\) & \( 2\) on the axis as shown in figure, then choose the **correct statement(s)** :-

(A) Angular momentum about the points \(O, 1\) & \(2\) are same.

(B) Component of angular momentum along axis \(AA'\) is same for all the points \(O, 1\) & \(2\).

(C) Net torque about point \(O, 1\) & \(2\) are same.

(D) Angular momentum about point \(1\) is not constant.

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