Solving the Violin String Problem: Frequency, Wave, and Tension

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SUMMARY

The discussion centers on solving the Violin String Problem involving a 35g string of 60cm length vibrating at a frequency of 196Hz. Key calculations include determining the frequency change when the string is fingered at 15cm, the wave propagation speed, and the tension in the string. The relevant equations are v = √(Tension Force / (m/L)) and vT = wavelength. Participants express uncertainty about how to apply these equations effectively due to perceived insufficient information.

PREREQUISITES
  • Understanding of wave mechanics and frequency calculations
  • Familiarity with tension force and its relationship to mass and length
  • Knowledge of basic physics equations related to wave propagation
  • Ability to manipulate algebraic equations for problem-solving
NEXT STEPS
  • Study the relationship between frequency and tension in strings
  • Learn how to calculate wave speed using tension and mass per unit length
  • Explore the concept of wavelength in relation to string instruments
  • Practice solving similar physics problems involving vibrating strings
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Physics students, music instrument makers, and educators looking to deepen their understanding of wave mechanics and string vibrations.

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Homework Statement


Mass of violin string = 35g
Length of string = 60cm
Frequency = 196Hz

What is the frequency change to if the string is fingered at 15cm from the top end?
How fast does the wave propagate down the string?
What is the tension in the string?

Homework Equations


v = Squareroot of (Tension Force / (m/L))
vT = wavelength


The Attempt at a Solution


No idea how to approach this problem.. Not enough given information to plug and chug into those equations.
 
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I think the frequency change would be higher? But I'm not sure how to figure out the tension, velocity, or wavelength.
 

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