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The following physics revision questions are provided in support of the physics tutorial on Newton's Second Law for System of Particles. 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 Newton's Second Law for System of Particles tutorials. The Newton's Second Law for System of Particles 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 Newton's Second Law for System of Particles questions? Review the tutorials and learning material for Newton's Second Law for System of Particles**

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

6.3 | Newton's Second Law for System of Particles |

**1)** Two forces are acting horizontally on a system of two particles connected through a very light and non-stretchable stick as shown in the figure.

What is the acceleration of the system (and in which direction does it occur)?

- 3 m/s2 right
- 6.5 m/s2 right
- 6 m/s2 left - down
- 6 m/s2 right

**Correct Answer: D**

**2)** Two particles are initially at the positions shown in the figure.

What is the acceleration of the system written in two decimal places?

- 3.33 m/s2
- 4.57 m/s2
- 1.14 m/s2
- 0.00 m/s2

**Correct Answer: A**

**3)** A system of three particles are shown in the figure below.

Where will the centre of mass be after 3 s if the system starts moving from rest?

- (10.1 m, 10.6 m)
- (12.4 m, 5.25 m)
- (9.1 m, 5.4 m)
- (12.85 m, 1.65 m)

**Correct Answer: B**

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- Continuing learning centre of mass and linear momentum - read our next physics tutorial: Moment of Force. Conditions of Equilibrium

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