Sinusoidal Wave: Double Frequency, Double Speed

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    Sinusoidal Wave
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SUMMARY

The discussion centers on the relationship between frequency and wave speed in a sinusoidal wave traveling along a string of uniform density. The correct conclusion is that doubling the frequency does not double the speed of the wave; instead, the speed remains constant. This is due to the fact that wave speed is determined by the tension and density of the string, as expressed in the equation v = λ * f, where λ is the wavelength and f is the frequency.

PREREQUISITES
  • Understanding of wave mechanics
  • Familiarity with the equation v = λ * f
  • Knowledge of tension and density effects on wave speed
  • Basic concepts of sinusoidal waves
NEXT STEPS
  • Study the effects of tension on wave speed in strings
  • Explore the relationship between wavelength and frequency in wave phenomena
  • Learn about different types of waves and their properties
  • Investigate the impact of density on wave propagation
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Physics students, educators, and anyone interested in wave mechanics and the properties of sinusoidal waves.

Andy_ToK
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Homework Statement


A sinusodial wave is moving along a string of uniform density. If you double the frequency of the wave,

a)the speed of the wave doubles
b)the speed of the wave remains about the same


Homework Equations


v=lambda*f


The Attempt at a Solution


I chose a) using the equation v=lambda*f. as f doubles, v doubles too.
 
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That would only be true if the wavelength remained the same.

What determines the speed of a wave on a string?
 
tension and density.

The answer is b)
 

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