A variable-length cantilever beam of rectangular cross section \(1.6 \mathrm{~mm} \times 25 \mathrm{~mm}\), made of spring steel, is used to measure the frequency of vibration. The length of the cantilever can be varied between \(50 \mathrm{~mm}\) and \(250 \mathrm{~mm}\). Find the range of frequencies that can be measured with this device.