Standing waves and frequency

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SUMMARY

The discussion centers on the calculation of the fundamental frequency of a string fixed at both ends, which exhibits standing-wave resonances at 325Hz and 390Hz. The largest possible value of the fundamental frequency is determined by finding the greatest common divisor (GCD) of these two frequencies. The GCD of 325Hz and 390Hz is 65Hz, confirming that the fundamental frequency is indeed 65Hz.

PREREQUISITES
  • Understanding of standing waves in physics
  • Knowledge of frequency and harmonics
  • Ability to calculate the greatest common divisor (GCD)
  • Familiarity with basic wave mechanics
NEXT STEPS
  • Study the principles of standing waves in strings
  • Learn about harmonic frequencies and their relationships
  • Explore methods for calculating the GCD of multiple numbers
  • Investigate the implications of fundamental frequency in musical acoustics
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Physics students, educators, and anyone interested in wave mechanics and acoustics will benefit from this discussion.

bigsaucy
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1.) A string, stretched between two fixed posts, forms standing-wave resonances at 325Hz and 390Hz. What is the largest possible value of its fundamental frequency?

I have no idea on how to solve this problem, any assistance would be greatly appreciated.
 
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Any frequency must be an integer multiple of the fundamental frequency. What is the largest integer that divides both 325 and 390?
 
would it be 65Hz?
 

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