# Physics Tutorial 6.3 - Newton's Second Law for System of Particles Revision Questions

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6.3Newton's Second Law for System of Particles

## Newton's Second Law for System of Particles Revision Questions

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)?

1. 3 m/s2 right
2. 6.5 m/s2 right
3. 6 m/s2 left - down
4. 6 m/s2 right

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

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

1. 3.33 m/s2
2. 4.57 m/s2
3. 1.14 m/s2
4. 0.00 m/s2

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?

1. (10.1 m, 10.6 m)
2. (12.4 m, 5.25 m)
3. (9.1 m, 5.4 m)
4. (12.85 m, 1.65 m)

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