What is the beat frequency for a cyclist ringing a bell towards a wall?

In summary, a cyclist with a bell ringing at a frequency of 659.7 Hz is moving towards a wall at a speed of 8.15 ms-1. As the cyclist approaches the wall, they hear beats due to the bell and its reflection off the wall. The frequency of these beats can be determined by taking into account the speed of sound in air, which is 343 ms-1.
  • #1
Joy Wong
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Homework Statement


A cyclist with a bell ringing with a frequency of 659.7 Hz drives towards a wall with a speed of 8.15 ms-1. Just before colliding with the wall the cyclist hears beats, due to the bell itself and the reflection of the sound from the wall. What is the frequency of beats detected by the observer? Assume that the velocity of sound in air is 343 ms-1.[/B]

Homework Equations


[/B]

The Attempt at a Solution

 
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  • #3
Ok,thanks
 

1. What is beat frequency for bell ring?

Beat frequency for bell ring is a phenomenon that occurs when two bells of slightly different frequencies are rung simultaneously. The resulting sound is a periodic variation in loudness, known as "beats".

2. How is beat frequency for bell ring calculated?

The beat frequency for bell ring is calculated by taking the difference between the two bell frequencies. For example, if one bell has a frequency of 500 Hz and the other has a frequency of 505 Hz, the beat frequency would be 5 Hz.

3. What causes beat frequency for bell ring?

Beat frequency for bell ring is caused by the interference of sound waves. When two sound waves of slightly different frequencies overlap, they create areas of constructive and destructive interference, resulting in the periodic variation in loudness.

4. How does beat frequency for bell ring affect the perceived pitch of the bells?

The perceived pitch of the bells is not affected by beat frequency. This is because the beat frequency is a result of interference and does not change the actual frequencies of the bells. Therefore, the pitch of the bells remains the same.

5. Can beat frequency for bell ring be used in musical compositions?

Yes, beat frequency for bell ring can be used in musical compositions to create unique and interesting sounds. Composers often use this phenomenon to add texture and depth to their pieces.

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