A telephone cable is clamped at A to the pole AB. Knowing that th tension in the right-hand portion of the cable is T2 1000 lb, determin by trigonometry (a) the required tension T, in the left-hand portion the resultant R of the forces exerted by the cable at A is to be vertica (b) the corresponding magnitude of R.

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Cables

Cables are collections of wires, alternatively referred to as a cord, connector, or plug. They are one or more wires covered in a plastic covering that allows for the transmission of power or data between devices. The earliest use of recognizable electrical cable was the early commercialized telegraph lines. These were iron-made and tedious to produce and install cabling.