Which of the following examples represents periodic motion?

1. A swimmer completes one (return) trip from one bank of a river to the other and back.
2. A freely suspended bar magnet is displaced from its N-S direction and released.
3. Swaying off the branches of the tree.
4. An arrow released from a bow.

Subtopic:  Types of Motion |
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The figure depicts four \(({x\text-t})\) plots for the linear motion of a particle.

(a)
(b)
(c)
(d)

Which of the following is true​​​​?

1. (a) is periodic but (c) is not periodic
2. (b) is periodic but (d) is not periodic.
3. (b) and (d) are periodic.
4. only (c) is periodic.
Subtopic:  Types of Motion |
 80%
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