Why does a vibrating simple pendulum not produce any sound?

Human ear can hear the lowest frequency about 20 Hz, this is 20 vibrations per second. Vibrations of pendulum are very small and frequency is less than 20 Hz, so we can't hear it.

Answered by luana | 2024-06-10

It does, but the sound is at a frequency that's too low for you to hear. If you could build a pendulum short enough so that it made 20 or more complete swings every second , THEN you'd begin to hear sound from it.

Answered by AL2006 | 2024-06-10

A vibrating simple pendulum does not produce sound primarily because its frequency is often below 20 Hz, which is below the audible range for humans. Additionally, the small amplitude of its vibrations is not enough to generate sound waves with sufficient energy to be heard. Therefore, even though it vibrates, the resulting motion does not produce audible sound.
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Answered by luana | 2024-12-26