Finding Tension in a Transverse Wave on a String

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SUMMARY

The discussion focuses on calculating the tension in a transverse wave on a string, specifically a 2.0 m long string with a mass of 50 g. The wave is described by the equation y(x,t)=pi/(pi+(3x/2+pi(t))^2). Key insights include the importance of determining the wave speed, which directly relates to the tension in the string. The amplitude of the wave is deemed irrelevant for this calculation, emphasizing the need to focus on wave speed and its connection to tension.

PREREQUISITES
  • Understanding of wave mechanics, specifically transverse waves.
  • Familiarity with the wave equation and its parameters.
  • Knowledge of the relationship between wave speed, tension, and mass per unit length.
  • Basic algebra for manipulating equations related to wave properties.
NEXT STEPS
  • Research the relationship between wave speed and tension in strings.
  • Learn how to derive wave speed from string properties using the formula v = sqrt(T/μ), where T is tension and μ is mass per unit length.
  • Explore the characteristics of non-sinusoidal waveforms and their implications in tension calculations.
  • Study examples of transverse waves in different mediums to understand variations in tension and wave speed.
USEFUL FOR

Physics students, educators, and anyone involved in wave mechanics or string theory will benefit from this discussion, particularly those focusing on tension calculations in transverse waves.

manyo2013
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Homework Statement


A transverse pulse is propagating on a 2.0 m long string of mass 50 g. The pulse is
described by the equation:

y(x,t)=pi/(pi+(3x/2+pi(t))^2)

, with x and y in meters, and t in seconds.
Find the tension in the string.

Homework Equations


y=asin(wt+thetha)[/B]

The Attempt at a Solution


I first tried finding the amplitude of the wave, and at then I would have the displacement. After the displacement i don't know what to do. How doees this even relate to tension?
 
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You are going about this the wrong way, the amplitude is completely irrelevant and your "relevant" equation is not either because it describes a sine wave and your wave is not a sine wave.

Ask yourself the following:
What is the speed of the wave?
How does the speed of the wave relate to the tension?
 

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