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HPCET Moment of Inertia — practice questions

Explore 1 free Moment of Inertia questions in HPCET Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Moment of Inertia questions and exercises with answers

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The **moment of inertia** of a thin uniform rod of mass $M$ and length $L$ about a perpendicular axis through its **centre** is:Read the answer and worked solution →

Worked practice questions

The **moment of inertia** of a thin uniform rod of mass $M$ and length $L$ about a perpendicular axis through its **centre** is:

  1. $ML^2/3$
  2. $ML^2/12$
  3. $ML^2/2$
  4. $ML^2$
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Correct answer: B. $ML^2/12$

**Standard result:** $I_{\text{cm}} = ML^2/12$. **About one end (parallel axis):** $I = ML^2/12 + M(L/2)^2 = ML^2/3$.

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