1. If a square-thread screw having a major diameter of 19 mm and six threads per 25.4mm is used to lift a load of 17.80
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1. If a square-thread screw having a major diameter of 19 mm and six threads per 25.4mm is used to lift a load of 17.80
1. If a square-thread screw having a major diameter of 19 mm and six threads per 25.4mm is used to lift a load of 17.80 KN, compute the efficiency of the power screw in raising the load. Use a coefficient of friction of 0.20.
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