Exam-style question
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In a collision, if the moment of inertia of a rotating object decreases, what happens to its angular velocity assuming angular momentum is conserved?.
- A.Angular velocity decreases
- B.Angular velocity increases
- C.Angular velocity remains the same
- D.Angular velocity becomes zero
Model answer
What a good answer should say
- Angular velocity increases
Explanation
Why this works
According to the conservation of angular momentum, if the moment of inertia decreases, the angular velocity must increase to keep the angular momentum constant (L = I * ω). This is a key principle in rotational dynamics.
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