Sound is produced by a vibrating source . Why then a vibrating pendulum does not produce any sound ?

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Solution

The audible range of a normal human being is $20 H z$ to $20 K H z$ . But a vibrating pendulum does not produce sound in this range. So, we are not able to hear this.

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Sound is produced by a vibrating source . Why then a vibrating pendulum does not produce any sound ?

The audible range of a normal human being is 20Hz to 20KHz . But a vibrating pendulum does not produce sound in this range. So, we are not able to hear this.

The audible range of a normal human being is $20 H z$ to $20 K H z$ . But a vibrating pendulum does not produce sound in this range. So, we are not able to hear this.