A uniform heavy disc is rotating at constant angular velocity \( \omega \) about a vertical axis...

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A uniform heavy disc is rotating at constant angular velocity \( \omega \) about a vertical axis through its centre and perpendicular to the plane of the disc. Let \( L \) be its angular momentum. A lump of plasticine is dropped vertically on the disc and sticks to it. Which will be constant
[AMU (Med.) 2001]
(a) \( \omega \)
(b) \( \omega \) and \( L \) both
(c) \( L \) only
(d) Neither \( \omega \) nor \( L \)
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