This question is of class 11th waves physics

Question

A wire 1m long and having a density of 9x10^3 kg/m^3 is stretched by 4.9x10^-4 m and tied between two rigid supports .if Y=9x10^10 N/m^2 ,the minimum frequency of transverse vibrations in the string will be

Answer 1

Here L = original length of the wire

l = the amount of stretching due to tension T

r = radius of cross section

p = density

 Y = Young's modulus