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Friday, 03 April 2026
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During a training session, two footballers pass a ball repeatedly between each other. ...

During a training session, two footballers pass a ball repeatedly between each other. The 'to and fro' motion of the ball is not simple harmonic because the
I. Acceleration of the ball is not directed towards a fixed point
II. Restoring force is not directed towards the centre
III. Acceleration of the ball is not directly proportional to the displacement from a fixed point
Which of the statements above are correct?
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  • A I and III only
  • B I and II only
  • C II and III only
  • D I, II and III
Correct Answer: Option A
Explanation:
In SHM, the body must have acceleration in a direction opposite to the displacement and the acceleration must be directly proportional to displacement. Also, the acceleration must be directed towards its mean position. This is not the case with a football on the pitch.

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