Question

". A steel wire 50cm long has mass of 5gm. It is stretch with a
ansion of 400N. Find the frequency of the wire in fundamental
mode of vibration.
DEGREE CO​

Answer 1

Here, m=20g=20×10−3kg,

T=800N,l=1m

v1=12lTm−−−√=12×180020×10−3−−−−−−−−−√=2002=100Hz

Frequencies of higher modes of vibration are