Find the length of string and speed of wave in string

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SUMMARY

The discussion focuses on calculating the length of a string and the speed of a wave within it, given a frequency of 850 Hz and a wavelength of 0.173 m. The speed of the wave is determined using the formula v = frequency × wavelength, resulting in a speed of 147.5 m/s. The string is described as a standing wave with both ends acting as nodes, indicating that the length of the string is half the wavelength for the fundamental frequency, which is 0.0865 m.

PREREQUISITES
  • Understanding of wave mechanics and standing waves
  • Familiarity with the wave equation v = frequency × wavelength
  • Knowledge of fundamental frequency in stringed systems
  • Basic concepts of nodes and antinodes in wave behavior
NEXT STEPS
  • Study the properties of standing waves in strings
  • Learn about the relationship between wavelength and string length in closed-end tubes
  • Explore the effects of tension and mass on wave speed in strings
  • Investigate harmonic frequencies and their calculations in stringed instruments
USEFUL FOR

Students studying physics, particularly those focusing on wave mechanics, as well as educators teaching concepts related to standing waves and string vibrations.

myoplex11
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Homework Statement


Find the length of string and speed of wave in string if frequency of given wave is 850 hz and the wavelength is 0.173m? The string is in a tube that is closed at both ends.




Homework Equations


v=(T/(m/L)^.5

The Attempt at a Solution



I found the speed using v=frequency*wavelength.
How do i find the length of the string?
i don't know the mass or the tension
 
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myoplex11 said:

The Attempt at a Solution



I found the speed using v=frequency*wavelength.
How do i find the length of the string?
i don't know the mass or the tension

This is a standing wave. Have you read about that?

Assume that the frequency given is that of the fundamental. What is the relationship between the wavelength and the length? In this case, the ends of the string are both nodes.
 

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