Information AboutRope |
| CATEGORIES ABOUT ROPE | |
| cables | |
| climbing equipment | |
| primitive technology | |
| ropework | |
| survival skills | |
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A rope (s, twisted or Braided together to improve strength for pulling and Connecting . It has Tensile Strength but is too flexible to provide Compressive Strength (i.e., it can be used for pulling, not pushing). Rope is thicker and stronger than similarly constructed cord, line, string, or twine. Common materials for rope include natural fibers such as Manila Hemp , Hemp , Linen , Cotton , Coir , Jute , and Sisal . Synthetic Fiber s in use for rope-making include Nylon , Polypropylene , Polyethylene , such as Spectra , a high Modulus Polyethylene , Aramid such as Kevlar , and Polyester such as Polyethylene Terephthalate . Some ropes are constructed of mixtures of several fibers or use co-polymer fibers. Ropes can also be made out of Metal fibers. Ropes have been constructed of other fibrous materials such as Silk , Wool , and Hair , but such ropes are not generally available. Rope has been an essential tool since Prehistoric times. It has been and still is of paramount importance in fields as diverse as Construction , Seafaring , exploration, sports and communications. In order to fasten rope, a large number of Knot s has been invented for various uses. Pulley s are used to redirect the pulling force to another direction, and may be used to create Mechanical Advantage , allowing multiple strands of rope to share a load and multiply the force applied to the end. Winch es and Capstan s are machines designed to pull ropes. HISTORY The use of ropes for hunting, pulling, fastening, attaching, carrying, lifting, and climbing dates back to prehistoric times and has always been essential to mankind's technological progress. It is likely that the earliest "ropes" were naturally occurring lengths of plant fiber, such as vines, followed soon by the first attempts at twisting and braiding these strands together to form the first proper ropes in the modern sense of the word. There is evidence of rope being made in this fashion dating as far back as 17,000 BC. |
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