Physics - Wave on String Question with Solution | TestHub

$$\mathrm{m}=\frac{50}{10}=5\mathrm{kg}$$ $$(\because \mathrm{W}=\mathrm{mg})$$ Tension in the mid-point of the wire is: $$\mathrm{T}=\frac{\mathrm{m}}{2}\mathrm{g}=\frac{5}{2}\times 10=25\mathrm{N}$$ $\therefore$ Speed of the wave at mid-point of the wire is: $$\begin{array}{rl}\mathrm{v}& =\sqrt{\frac{\mathrm{T}}{\mu }}=\sqrt{\frac{25}{\left(\frac{5}{20}\right)}}\left(\because \mu =\frac{\mathrm{m}}{\mathrm{L}}\right)\\ \therefore \mathrm{v}& =10\mathrm{m}/\mathrm{s}\end{array}$$