Question:
The given figure shows an aluminum wire of length $60 \mathrm{~cm}$ joined to a steel wire of length $80 \mathrm{~cm}$ and stretched between two fixed supports. The tension produced is $40 \mathrm{~N}$. The cross-sectional area of the steel wire is $1.0 \mathrm{~mm}{ }^{2}$ and that of the aluminum wire is $3.001 .0 \mathrm{~mm}^{2}$. What could be the minimum frequency of a tuning fork which can produce standing waves in the
Solution:
