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A typical late-model cable binding. The boot is inserted into the metal plate, and held down by a leather strap (missing). The cable is then lifted over the heel of the boot, and pulled forward by the lever at the top of the image. The spring keeps constant tension as the boot moves up and down through the striding motion.
The dumbbell-shaped device consists of two masses at the ends of a short length of cable or flexible rod, which is clamped at its middle to the main cable. The damper is designed to dissipate the energy of oscillations in the main cable to an acceptable level. [3] Stockbridge dampers installed on high voltage power lines
The pullover is an exercise that is performed with either a dumbbell or a barbell. [1] Pullovers can be made to affect either the chest or the back depending on how wide the grip is (barbell) and the position of the shoulders.
For example, consider a system consisting of an object that is being lowered vertically by a string with tension, T, at a constant velocity. The system has a constant velocity and is therefore in equilibrium because the tension in the string, which is pulling up on the object, is equal to the weight force , mg ("m" is mass, "g" is the ...
A chain hanging from points forms a catenary. The silk on a spider's web forming multiple elastic catenaries.. In physics and geometry, a catenary (US: / ˈ k æ t ən ɛr i / KAT-ən-err-ee, UK: / k ə ˈ t iː n ər i / kə-TEE-nər-ee) is the curve that an idealized hanging chain or cable assumes under its own weight when supported only at its ends in a uniform gravitational field.
A block and tackle is characterized by the use of a single continuous rope to transmit a tension force around one or more pulleys to lift or move a load. Its mechanical advantage is the number of parts of the rope that act on the load. The mechanical advantage of a tackle dictates how much easier it is to haul or lift the load.
Tensioning the line makes waves travel faster, and also reduces sag from gravity. For medium and high speeds, the wires are generally tensioned by weights or occasionally by hydraulic tensioners. Either method is known as "auto-tensioning" (AT) or "constant tension" and ensures that the tension is virtually independent of temperature.
Overhead electrical wires may be kept in tension by springs or weights. Conveyor belts; Chair lift and gondola lift cables; Certain wood trusses, such as the beam tensioner truss picture below. [5] [6] Fencing made of wire, such as electric fences, barbed-wire fences, and chainlink fences often include tensioning devices to keep them taut.