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The earth is revolving round the sun. Is...

The earth is revolving round the sun. Is it an example of a simple harmonic motion? Explain.

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In case of motion of the earth (if we consider earth.s orbit to be spherical), its acceleration is directed towards a particular point (sun). But this motion is not linear. Also, the value of acceleration does not vary proportionally with the distacne of the earth from the sun. Hence, the earth.s revolution around the sun is not an example of simple harmonic motion.
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Knowledge Check

  • In simple harmonic motion

    A
    Potential energy and kinetic energy may not be equal in mean position
    B
    Potential energy and kinetic energy may be equal in extreme position
    C
    Potential energy may be zero at extreme position
    D
    Kinetic energy plus potential energy oscillates simple harmonically

  • Which of the following functions represent simple harmonic motion?

    A
    `sin 2 omegat`
    B
    `sin^2 omegat`
    C
    `sinomegat +2cosomegat``
    D
    `sinomegat +cos2omegat`

  • Which of the foIIowing is a one-dimensionaI motion? (A) Landing of an aircraft. (B) Earth revolving around the sun. (C) Motion of wheels of a moving train. (D) Train running on a straight track.

    A
    Landing of an aircraft
    B
    Earth revolving around the sun
    C
    Motion of wheels of a moving train
    D
    Train running on a straight track

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