Огромное спасибо. Решение к задаче расписано подробно, что очень радует.
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Task 31231.
To determine the place where one of the two-conductor cable wires were damaged due to the connection with the earth, it is possible to use the installation diagram is shown in Fig. AB - the string on which you can move the contact K. Define cable fault if the galvanometer makes deviations when contact K is at a distance of 41 cm from the end of the string length W. 100 cm cable length of 7.8 km.
Detailed solution shorthand terms, formulas and laws used in the decision, the withdrawal of the calculation formula and the response.
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