The safe working load (SWL) of wire rope with a safety factor of 6 is what percent of its strength?
• Safety factor and what it means for working vs breaking strength • Relationship between safe working load (SWL) and ultimate (breaking) strength • How to convert a ratio (like 6:1) into a percentage
• If the safety factor is 6, how many equal parts is the rope’s total strength divided into? • What fraction of the total strength is used as the allowed working load when the safety factor is 6? • Once you know the fraction (like 1/6), how do you change that into a percentage to match one of the choices?
• Be clear that SWL is always LESS than breaking strength by the safety factor. • Confirm you’re using 1 ÷ safety factor, not safety factor ÷ 1, when finding the working fraction. • After finding the fraction, multiply by 100 to get percent and compare with the answer choices.
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