How do I calculate the strain/extension of cable - diameter/length/force applied +Youngs modulus are known?

I am struggling with a question for an OU assignment - I'm absolutely knackered and I've spent ages wrestling with it so this is a last resort. I'm not going to give ...show more
Answer:

I don't have the exact answer you are looking for, but try finding specs for Cable railings. There are specifications for the tension and load bearing capabilities of these cables to pass a building inspection. Also look at life line tension standards. I hope I didn't miss the whole point of your question.

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E = change in stress / change in strain E is the Young's Modulus change in stress = force applied / cross sectional area change in strain is what you need to solve for, which should be a % because it is the physical extension divided by the original length. The actual physical extension is found by the following equation: (change in strain * original length) where * is multiplication. Good luck, and I hope this helps.

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