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How does the conservation of momentum apply in rotational motion?

Answer 1

Law of conservation of momentum is an exact law in classical mechanics and is valid throughout. In case of rotational motion, the rotational analogue of momentum called the angular momentum plays the more important role.
Pretty much like momentum, angular momentum is always conserved in situations of rotational motion.

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Answer 2

Nathan Ashcroft

In rotational motion, the conservation of momentum applies through the principle known as angular momentum conservation. Angular momentum, like linear momentum, is conserved when no external torques act on a system. This means that if the net torque acting on a rotating object is zero, its angular momentum remains constant. This principle can be applied to various rotational motion scenarios, such as spinning objects, rotating bodies, or systems with changing moments of inertia.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.