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The following physics revision questions are provided in support of the physics tutorial on Dynamics of Rotational Motion. In addition to this tutorial, we also provide revision notes, a video tutorial, revision questions on this page (which allow you to check your understanding of the topic) and calculators which provide full, step by step calculations for each of the formula in the Dynamics of Rotational Motion tutorials. The Dynamics of Rotational Motion calculators are particularly useful for ensuring your step-by-step calculations are correct as well as ensuring your final result is accurate.

**Not sure on some or part of the Dynamics of Rotational Motion questions? Review the tutorials and learning material for Dynamics of Rotational Motion**

Tutorial ID | Title | Tutorial | Video Tutorial | Revision Notes | Revision Questions | |
---|---|---|---|---|---|---|

7.2 | Dynamics of Rotational Motion |

**1)** What is the angular momentum of a 3 kg cylinder rotating at 2 rad/s around its central axis of symmetry as shown in the figure? Take the radius of cylinder R = 40 cm and its height h = 2 m.

- 0.24 kg × m
^{2}/ s - 0.48 kg × m
^{2}/ s - 0.96 kg × m
^{2}/ s - 1.12 kg × m
^{2}/ s

**Correct Answer: B**

**2)** What is the mass of a 2 m bar rotating around its centre as shown in the figure if its rotational kinetic energy is 8 J and it rotates uniformly at 0.4 rad/s?

- 75 kg
- 100 kg
- 300 kg
- 1200 kg

**Correct Answer: C**

**3)** A 1.6 m bar rotates at 0.6 rot/s around its centre when a 20 N force is used horizontally as shown in the figure.

What is the power delivered by the source?

- 9.6 W
- 16 W
- 26.7 W
- 32 W

**Correct Answer: A**

Enjoy the "Dynamics of Rotational Motion" practice questions? People who liked the "Dynamics of Rotational Motion" practice questions found the following resources useful:

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- Check your calculations for Rotation questions with our excellent Rotation calculators which contain full equations and calculations clearly displayed line by line. See the Rotation Calculators by iCalculator™ below.
- Continuing learning rotation - read our next physics tutorial: Centripetal Force

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