Posted by **Tina** on Monday, July 11, 2011 at 6:49pm.

Question: Two strings at different lengths and linear densities are joined together. They are stretched so that the tension in each string is 190.0 N. The free ends are fixed in place. Find the lowest frequency that permits standing waves in both strings with a node at the junction. The standing wave pattern in each string may have a different number of loops.

3.75 m 1.25m

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6*10^-2 kg/m 1.5*10^-2 kg/m

(this is kinda what the picture looks like if it helps but it seems really confusing on the computer)

Equations I should use (there may be others):

f=nv/2L

(n1v1)/2L1=(n2v2)/2L2

Other information I am given:

L1=3.75

L2=1.25

n1=?

n2=?

v1=?

v2=?

(m/L)=6.00x10^-2 kg/m

(m/L)2=1.50x10^-2 kg/m

I need to create a ratio between n1 and n2.

I don’t understand how I get v and then how to find a ratio between n1 and n2.

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