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An extension ladder. A ladder is a vertical or inclined set of rungs or steps commonly used for climbing or descending. There are two types: rigid ladders that are self-supporting or that may be leaned against a vertical surface such as a wall, and rollable ladders, such as those made of rope or aluminium, that may be hung from the top.
This device utilizes a large surface area in contact with a climbing rope to provide sufficient friction along with the proper technique to be used as a belay device or for rappelling. A figure 8 (sometimes just referred to as an 8) is used in conjunction with a climbing harness and locking carabiner to control a belayed climber's descent, or ...
Skid marks can also be formed where a ladder suddenly slips and the user falls to the ground, especially if the ladder feet are faulty or absent. Loss of the rubber feet or foot causes the aluminum stile to make contact with the ground, and if a hard surface like concrete or tiling, a skid mark shows how and why the ladder slipped. Unless fixed ...
In rock climbing a slab climb (or friction climb) is a type of climbing route where the rock face is 'off-angle' and not fully vertical. While the softer angle enables climbers to place more of their body weight on their feet, slab climbs maintain the challenge by having smaller holds.
The Munter hitch creates friction by having the rope rub on itself and on the object it has been wrapped around. There is no localized abrasion on any part of the rope as it is a continuously moving hitch. One very useful aspect of the Munter is its reversibility; it can be pulled from either side of the rope and it still works just as effectively.
The angle of friction, [7] also sometimes called the angle of repose, [8] is the maximum angle at which a load can rest motionless on an inclined plane due to friction without sliding down. This angle is equal to the arctangent of the coefficient of static friction μ s between the surfaces. [8]
In climbing, a Tyrolean traverse is a technique that enables climbers to cross a void between two fixed points, such as between a headland a detached rock pillar (e.g. a sea stack), or between two points that enable the climbers to cross over an obstacle such as chasm or ravine, or over a fast moving river. [1]
(It may be necessary to calculate the stress to which it is subjected, for example.) On the right, the red cylinder has become the free body. In figure 2, the interest has shifted to just the left half of the red cylinder and so now it is the free body on the right. The example illustrates the context sensitivity of the term "free body".