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GCC Mines & Works Plant Engineering Exam Practice Questions - GCC Mines & Works Engineer - Plant Engineering Examination (South Africa) Exam

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A deep-level gold mine shaft uses a single-drum cylindrical winder to lift rock from a depth of 1,800 m. The steel wire rope has a mass of 8.5 kg/m and the suspended skip empty mass is 6,000 kg. If the maximum payload of rock per trip is 10,000 kg, calculate the static safety factor of the rope at the headgear sheave when the loaded skip is at the bottom of the shaft, assuming a nominal rope breaking force of 2,400 kN. (Take g = 9.81 m/s²).
Correct Answer:
7.82

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