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27 May, 17:16

The frequency of a simple pendulum that makes 120 complete oscillations in 3 minutes is:

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  1. 27 May, 17:24
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    Answer: 0.67 Hz

    Explanation:

    Given that:

    Number of oscillations = 120

    Time taken for oscillations = 3 minutes

    Since standard unit of time is seconds, convert 3 minutes to seconds

    (If 1 minute = 60 seconds

    3 minutes = 3 x 60 = 180 seconds)

    Then, recall that frequency is the number of complete cycles or oscillations in one second, and its unit is Hertz.

    Thus, frequency = (number of oscillations / time)

    F = 120 / 180 seconds

    F = 0.67 Hz

    Thus, the frequency of a simple pendulum is 0.67Hz
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