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Rope: Difference between revisions
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A '''rope''' is a length of [[fiber]]s, twisted or [[braid]]ed 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]]. | A '''rope''' is a length of [[fiber]]s, twisted or [[braid]]ed 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 fibers''' in use for rope-making include [[polypropylene]], nylon, [[polyester]] (e.g. [[polyethylene terephthalate|PET]]), [[polyethylene]] (e.g. [[Dyneema|Spectra]]) and [[Aramid]]s (e.g. [[Twaron]], [[Technora]] and Kevlar). Some ropes are constructed of mixtures of several fibres or use co-polymer fibres. 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 is of paramount importance in fields as diverse as [[construction]], [[seafaring]], exploration, sports and communications and has been since [[prehistory|prehistoric]] times. In order to fasten rope, a large number of [[knot]]s have 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 (nautical)|capstans]] are machines designed to pull ropes. | Rope is of paramount importance in fields as diverse as [[construction]], [[seafaring]], exploration, sports and communications and has been since [[prehistory|prehistoric]] times. In order to fasten rope, a large number of [[knot]]s have 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 (nautical)|capstans]] are machines designed to pull ropes. | ||
