Exam-style question
Try this first
How does the distribution of mass affect the moment of inertia of an object?.
- A.More mass near the axis decreases moment of inertia.
- B.More mass away from the axis increases moment of inertia.
- C.Mass distribution does not affect moment of inertia.
- D.Moment of inertia is constant regardless of mass distribution.
Model answer
What a good answer should say
- More mass away from the axis increases moment of inertia.
Explanation
Why this works
The moment of inertia depends on how mass is distributed relative to the axis of rotation. More mass located further from the axis increases the moment of inertia, making it harder to rotate.
Common mistake
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