A bob of mass \( m \) attached to an inextensible string of length ...

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A bob of mass \( m \) attached to an inextensible string of length \( l \) is suspended from vertical support. The
\( \mathrm{P} \) bob rotates in a horizontal circle with an angular

W speed \( \omega \mathrm{rad} / \mathrm{s} \) about the vertical. About the point of suspension.
(1) Angular momentum is conserved
(2) Angular momentum changes in magnitude but not in the direction
(3) Angular momentum changes in direction but not in magnitude
(4) Angular momentum changes both in direction and magnitude
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