Angular momentum is conserved.
* Angular Momentum: Angular momentum is a measure of an object's tendency to rotate. It depends on both the object's mass (how much stuff it has) and its distribution of mass relative to the axis of rotation (how spread out it is).
* Conservation: In the absence of external torques (rotational forces), angular momentum remains constant. This is a fundamental principle in physics.
What happens when an object shrinks?
* Moment of Inertia: The moment of inertia (I) is a measure of how difficult it is to change an object's rotation. It's related to the object's mass distribution. When an object shrinks, its moment of inertia *decreases*.
* Angular Velocity: To conserve angular momentum (L), if the moment of inertia (I) decreases, the angular velocity (ω) must increase. This means the object will spin faster.
Analogy: Imagine a figure skater pulling their arms in during a spin. Their moment of inertia decreases, causing them to spin much faster. This is because their angular momentum remains constant.
In Summary:
When an object shrinks in size but not mass, its angular velocity increases to compensate for the decrease in moment of inertia, keeping the angular momentum constant.
