All Questions
46
questions
1
vote
1
answer
55
views
String vibration dimensions
We're all familiar with the typical diagrams of standing waves of a string, as in this image from Wikipedia:
The thing that bothers me is that they ignore the reality that the string is vibrating in ...
- 11
0
votes
2
answers
96
views
How does a string thickness affect the frequency of its harmonics?
The harmonics of a theoretically infinitely small diameter string are pure integer multiples of the fundamental frequency. However, a real string has a thickness, and when vibrating in a harmonic, the ...
13
votes
3
answers
4k
views
Why do strings in musical instruments have helical shape?
We learn that waves travels in strings under tension, have fundamental frequencies, but I have no luck understanding why don't musical instruments have simple strings with uniform thickness which we ...
- 169
0
votes
1
answer
226
views
How to measure the tension in a guitar string without directly measuring the frequency of the sound?
I'm looking for an accurate method to measure the tension in a guitar string, without using a sonometer setup nor by measuring the frequency.
the current method that I have in mind is to measure the ...
- 1
0
votes
2
answers
152
views
Tension in a violin string
Say we have a string of fixed size on a violin. If I were to play it open (without pressing down on it) it would vibrate at a certain frequency. If I were to play it whilst pressing down on the middle,...
1
vote
2
answers
223
views
Relation between frequency of vibrator generator and frequency of waves in a stretched string
Imagine a vibration generator is attached to a stretched string. Will the frequency of the vibration generator be equal to the frequency of the waves produced in the stretched string?
Also, a similar ...
- 105
0
votes
1
answer
58
views
2 fundamental frequencies observed on a wire?
In an A-Level Physics Practical, we investigated fundamental standing waves on a wire using the setup in the attached diagram. Our signal generator had a scale dial, allowing it to vary between x1, ...
8
votes
6
answers
3k
views
Can the wavelength of the standing wave be different from the wavelength of the sound it emits?
I have a question about standing waves on strings. I'll try to explain the best I can, I searched and researched the whole day yesterday but I am confused still:
Every frequency has a single, and ...
- 185
4
votes
1
answer
2k
views
What exactly is the natural frequency of an object?
My book defines natural vibrations as:
THE PERIODIC VIBRATIONS OF A BODY IN THE ABSENCE OF ANY EXTERNAL FORCE ON IT, ARE CALLED NATURAL VIBRATIONS.THE TIME PERIOD IS CALLED ITS NATURAL PERIOD AND THE ...
0
votes
2
answers
608
views
How is length of string and frequency of sound related in musical instruments like guitar, violin etc? Also differentiate between note and tone
I read a sentence that a guitarist set his strings before performance then he is changing frequency of sound. I was wondering in which case frequency will be more, if length of string is large or ...
- 159
2
votes
1
answer
257
views
Intuition for normal modes of a beaded string
These questions are inspired by the following the paper http://www.soton.ac.uk/~stefano/courses/PHYS2006/chapter7.pdf on 'Normal Modes of a Beaded String'.
Problem Statement
Given a recurrence ...
- 77
2
votes
1
answer
537
views
Is the frequency of a vibrating string equal to the frequency of the sound it creates?
Is the frequency of a vibrating string equal to the frequency of the sound it creates? For example, if a string is vibrating at 440Hz, would the sound it creates be 440Hz as well?
Furthermore, would a ...
- 23
1
vote
0
answers
85
views
The effect of a temperature change on the fundamental frequency of a stretched string
I am curious about the effect of temperature on the frequency of say, a guitar string (stretched under a tension $F_T$ and of fixed length $L$). I wonder if someone here could check my work.
First of ...
- 31
0
votes
2
answers
283
views
Question about fundamental frequencies
For a string fixed at both ends, with a fundamental frequency of 440Hz, can there be a harmonic when a wave of frequency 220Hz is sent across the string? my book says no, but I disagree; can't ...
- 323
0
votes
1
answer
149
views
Why can harmonics be a different note than their fundamental frequency?
I was under the impression for the longest time that when you hear a harmonic on a string, its basically a sum of different resonating frequencies, which are all INTEGER multiples of the base ...
- 2,989