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NEET UG PHYSICS MCQ: SYSTEM OF PARTICLES

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An ant is sitting at the edge of a rotating disc. If the ant reaches the other end, after moving along the diameter, the angular velocity of the disc will

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Correct option: C

First increases and then decreases

Option B (First decreases and then increases) is correct because as the ant moves towards the center, the moment of inertia of the system decreases, causing the angular velocity to increase. As the ant moves away from the center, the moment of inertia increases, causing the angular velocity to decrease.

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