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Which of the following examples represen...

Which of the following examples represent periodic motion?
(a) A swimmer completing one return trip from one bank of a river to other bank. (b) A freely suspended bar magnet displaced from its `N-S` direction and released. (c) A hydrogen molecule rotating about its centre of mass. (d) An arrow released from a bow.

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(a) It is not periodic because motion of swimmer is to and fro but not having a definite period.
(b) A freely suspended magnet once displaced and then let it go will oscillate about this position. Hence its motion is periodic.
(c ) It is periodic.
(d) it is not periodic.
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MODERN PUBLICATION-OSCILLATIONS -NCERT FILE (Textbook Exercises)
  1. Which of the following examples represent periodic motion? (a) A swi...

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  2. Which of the following examples represent (nearly) simple harmonic mot...

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  3. Fig. 14.23 depicts four x-t plots for linear motion of a particle. Whi...

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  4. Which of the following functions of time represent (a) simple harmonic...

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  5. A particle is in linear S.H.M. between two points A and B, 10 cm apart...

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  6. Which of the following relationship between the acceleration, a and t...

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  7. The motion of a particle in S.H.M. is described by the displacement fu...

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  8. A spring balance has a scale that reads from 0 to 50kg. The length of ...

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  9. A spring of force constant 1200Nm^(-1) is mounted on a horizontal tabl...

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  10. In exercise 14.9 let us take the position of mass when the spring is u...

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  11. Figure below correspond to two circular motions. The radius of the cir...

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  12. Plot the corresponding reference circle for each of the following simp...

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  13. Figure a) shows a spring of force constant k clamped rigidly at once e...

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  14. The piston in the cylinder head of a locomotive has a stroke (twice th...

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  15. The acceleration dula to gravity on the surface of moon is 1.7ms^(-2...

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  16. Answer the following questions: (a) Time period of particle is S.H.M. ...

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  17. A simple pendulum of length l and having a bob of mass M is suspended ...

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  18. A cylindrical piece of cork of base area A and height h floats in a li...

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  19. One end of a U-tube containing mercury is connected to a suction pump ...

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