I am stuck on this question. I need to determine the expected frequency, f_2, of the second harmonic (n=2) standing wave with the given:
hanging mass = 150 g, linear mass density = 4.1 g/m and the length of the string is L = 1.8 m.
The equation I have been using is f_n = (n*V) / (2*L). Except I don't know V and how do I use the linear mass density (mu) in this case?
2007-08-28 12:39:04 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Physics
I got F = (0.15kg)(9.81 m/s^2) = 1.4715 then I got V = 0.5991 m/s. I calculated f_2 to be 0.333, is this right??
2007-08-28 13:51:22 · update #1
The following formula can be used to obtain velocity:
v=sqrt(F/x) ; where v is velocity, F is force or tension
on the string, and x is mass per unit of the
string
2007-08-28 12:49:40 · answer #1 · answered by active open programming 6 · 0⤊ 0⤋
Expected Frequency
2016-10-03 10:33:13 · answer #2 · answered by ? 4 · 0⤊ 0⤋
The fundamental frquency of oscillation for a string with both ends fixed is as you said f-1=V/2L. The speed of the waves on the string: v= sqrt(F_tension/(m/L)) You should be able to find it in your book.
m/L is linear mass density.
2007-08-28 12:51:53 · answer #3 · answered by Snowflake 7 · 0⤊ 0⤋