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2876Re: Breaking Strength of support webbing/rope/cord

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  • subypower
    Sep 15, 2003
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      i would disagree with the thought of the weight effect vrs angle of
      pull those numbers would work if the straps where made of something
      ridged like steel and fixed at a parallel angle to gravity and you
      where pulling perpendicular to gravity. But the strap is being pulled
      straight and thats how it takes the load it does not matter if it is
      down or side ways it carrys the same weight. there is no such thing a
      torsional strength in a very flexible object.

      now there is some thing called bounce and the sretchiness of the
      hammock and straps can very quickly cause a greater load than gravity
      alone, take for instance you said you weigh about 200 lbs but if you
      bounce from a height of 1 foot you would put the force of 200 lbs and
      from 2 foot you put 400 lbs, from 3 feet it would be 800 lbs of
      force, it is not a linear ratio of height to force it is closer to
      squaring the force for doubling the distance. which is why in
      firearms a light bullet at a 10 % increase in speed puts out 20 %
      more energy than a heavier bullet at the slower speed

      scott thacher
      white knight
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