How to calculate standing wave of a string of 20cm
Answers
Explanation:
Method 1
If you know the distance between nodes and antinodes, or if you know the length of string (or pipe length) and which harmonic is present.
If you know the distance between nodes and antinodes then use this equation:
λ
2
=
D
Where D is the distance between adjacent nodes or antinodes.
If you know the harmonic and length of string then you need to relate the wavelength to the length of string/pipe (L) using the following:
For strings and open pipes
Harmonic, Wavelength in terms of L
1,
λ
/
2
2,
λ
3,
3
λ
/
2
4,
2
λ
Etc. Notice amount of wavelength present increases by half each time.
For closed pipes
Harmonic, Wavelength in terms of L
1,
λ
/
4
2,
3
λ
/
4
3,
5
λ
/
4
4,
7
λ
/
4
Etc. Notice amount of wavelength present increases by half each time.
Answer:
Explanation:
If you know the distance between nodes and antinodes, or if you know the length of string (or pipe length) and which harmonic is present.
If you know the distance between nodes and antinodes then use this equation: