The third cable snaps, and the remaining cables, forced to bear the additional load, quickly follow.

第三根缆绳折断了，其余的缆绳被迫承受额外的负载，很快也随之断裂。

If you know the weight of the cable, you can use the catenary equation with the measured sag distance to estimate cable force fairly accurately.

如果您知道电缆的重量，则可以使用悬链线方程和测量的垂距来相当准确地估计电缆力。