The rigid pole and cross-arm assembly is supported by the three cables shown. A turnbuckle at...

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The rigid pole and cross-arm assembly is supported by the three cables shown. A turnbuckle at D is tightened until it induces a tension T in CD of 1.2 kN. Express T as a vector. Does it make any difference in the result which coordinate system is used? 2 m B 15 m 15 m 3 m 15 m 3 m 7-12 kN The rigid pole and cross-arm assembly is supported by the three cables shown. A turnbuckle at D is tightened until it induces a tension T in CD of 1.2 kN. Express T as a vector. Does it make any difference in the result which coordinate system is used? 2 m B 15 m 15 m 3 m 15 m 3 m 7-12 kN