A conical pendulum consists of a simple pendulum moving \( \mathrm{P} \) in a horizontal circle ...

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A conical pendulum consists of a simple pendulum moving
\( \mathrm{P} \) in a horizontal circle as shown in the figure. \( C \) is the pivot,

W \( O \) the centre of the circle in which the pendulum bob moves and \( \omega \) the constant angular velocity of the bob. If \( \vec{L} \) is the angular momentum about point \( C \), then
(1) \( \vec{L} \) is constant
(2) only direction of \( \vec{L} \) is constant
(3) only magnitude of \( \vec{L} \) is constant
(4) none of the above
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