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

AI Thread Summary
A cyclist ringing a bell at 659.7 Hz approaches a wall at 8.15 m/s, creating a scenario to calculate the beat frequency heard just before impact. The Doppler effect is applied to determine the frequency of the sound reflected from the wall, which is influenced by the cyclist's speed. The frequency of the reflected sound is calculated to be higher due to the cyclist's motion towards the wall. The beat frequency, resulting from the difference between the original and reflected frequencies, can then be computed. This scenario illustrates the interaction of sound waves and motion in a practical context.
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


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The Attempt at a Solution

 
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Ok,thanks
 

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