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The pendulum of lengths 121 cm and 100 cm start vibrating. At some instant, the two are in the mean position in the same phase. After how many vibrations of the shorter pendulum, the two will be in the same phase in the mean position

  • 10 vibrations
  • ✅ 11 vibrations
  • 20 vibrations
  • 21 vibrations

Answer is "11 vibrations"

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Andrea Andrea

I'm in exam, can any one give the solution for this question

Kimberly Kimberly

Thank you so much for the answer

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