How far will the pendulum travel in one complete swing if the vibration amplitude is 4 cm?

Let us take the state of rest as the initial phase, then after a quarter of the period the pendulum will travel a distance equal to the amplitude A, then it will return to its original state and the process will be repeated in the other direction. Thus, the total path will be equal to:
4 * A = 4 * 4 = 16 cm.



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