[QUE/TH-02007] TH-PROBLEM

The fundamental frequency of vibration of a wire of length
$L$, mass $m$, and tension $\mathcal{J}$ is given by
$$
f_1={1\over2L} \sqrt{{\mathcal{J}L\over m}}
$$
With what frequency of vibration with the wire of Prob. [2] vibrate
at 20$^\circ$C; $8^\circ$C? (The density of wire is $9.0\times10^3$
kg/m$^3$)