Physics - Wave on String Question with Solution | TestHub

14 A load of 20 kg is suspended by a steel wire as shown in Figure 6.109. The velocity of the wave when the wire is rubbed with a resined cloth along its length is 20 times the velocity of the wave in the same wire when it is plucked. Find the area of cross-section of the wire if Y for steel is $19.6\times 1010\mathrm{N}/{\mathrm{m}}^2$ and $\mathrm{g}=9.8\mathrm{m}/{\mathrm{s}}^2$. (answer in cm2).