Question:
If a spinning object contracts, its angular velocity ________.
If a spinning object contracts, its angular velocity ________.
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Conservation of Angular Momentum: Pulling arms in (contracting) makes you spin faster.
Updated On: Jun 26, 2026
- remains the same
- becomes zero
- becomes negative
- increases
- decreases
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The Correct Option is D
Solution and Explanation
Step 1: Concept
Law of conservation of angular momentum states $L = I\omega$ is constant.
Step 2: Meaning
If an object contracts, its radius decreases, leading to a decrease in its moment of inertia ($I$).
Step 3: Analysis
Since $I\omega$ is constant, if $I$ decreases, the angular velocity $\omega$ must increase to compensate.
Step 4: Conclusion
The angular velocity increases. Final Answer: (D)
Law of conservation of angular momentum states $L = I\omega$ is constant.
Step 2: Meaning
If an object contracts, its radius decreases, leading to a decrease in its moment of inertia ($I$).
Step 3: Analysis
Since $I\omega$ is constant, if $I$ decreases, the angular velocity $\omega$ must increase to compensate.
Step 4: Conclusion
The angular velocity increases. Final Answer: (D)
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