Why do we hear the sound produced by the humm | vedclass

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Question

(A) The sound produced by humming bees is caused by the rapid vibration of their wings,which creates a frequency within the human audible range ($20 \

Vedclass · Accepted Answer

The frequency of bee sound is within the audible range,while the pendulum frequency is infrasonic.

Vedclass · Answer

(A) The sound produced by humming bees is caused by the rapid vibration of their wings,which creates a frequency within the human audible range ($20 \,Hz$ to $20,000 \,Hz$).In contrast,the vibrations of a typical pendulum are very slow,resulting in a frequency below $20 \,Hz$,which is classified as infrasonic sound.Since the human ear cannot detect frequencies below $20 \,Hz$,we cannot hear the sound of the pendulum's vibrations.

Why do we hear the sound produced by the humming bees while the sound of vibrations of a pendulum is not heard?

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