Physics - Rotation Question with Solution | TestHub

The cable strung between two neighbouring electricity posts sags a little. The mass per unit length of the cable is $\lambda$, the distance between the posts is L , and the 'maximum sag' of the cable is $\mathrm{d}(\mathrm{d}\ll \mathrm{L})$. Due to relatively small sag the tension in the cable can be assumed to be uniform. The cable obeys Hooke's law. The approximate value of Tension is $x\left(\frac{\lambda L^2}{d}\right)$. Then value of 100$x$ is $\left(g=10\mathrm{m}/{\mathrm{s}}^2\right)$