physics helpppp!!
posted by joey .
The 2nd harmonic of a string of length 40cm and linear mass density 1.11g.m has the same frequency as the 5th resonance mode of a closed pipe of length 1.4m. Find the tension in the string.
use 340 for speed of sound

The 2nd harmonic of atring of lenght 60cm and linear mass density 1.2g/m has the same frequency as the 5th harmonic of closed pipe of lenght 1m, find the tenson in string