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Margaret Jane Pauley (born October 31, 1950) is an American television host and author, active in news reporting since 1972. She first became widely known as Barbara Walters's successor on the NBC morning show Today, beginning at the age of 25, where she was a co-anchor from 1976 to 1989, at first with Tom Brokaw, and later with Bryant Gumbel; for a short while in the late 1980s she and Gumbel ...
A block and tackle[ 1 ][ 2 ] or only tackle[ 3 ] is a system of two or more pulleys with a rope or cable threaded between them, usually used to lift heavy loads. The pulleys are assembled to form blocks and then blocks are paired so that one is fixed and one moves with the load. The rope is threaded through the pulleys to provide mechanical ...
Z-drag. Typical Z-Drag Configuration. A Z-Drag or Z-Rig is an arrangement of lines and pulleys, effectively forming a block and tackle, that is commonly used in rescue situations. [1] The basic arrangement results in pulling the hauling end 3 times the distance the load is moved, providing a theoretical mechanical advantage of three to one.
Annular (A1-A5) and cruciform (C0-C3) ligaments of the tendon sheath over the flexor tendons of the index finger of the left hand. In human anatomy, the annular ligaments of the fingers, often referred to as A pulleys, are the annular part of the fibrous sheathes of the fingers. Four or five such annular pulleys, together with three cruciate ...
1. Sheave without a rope. A pulley is a wheel on an axle or shaft enabling a taut cable or belt passing over the wheel to move and change direction, or transfer power between itself and a shaft. A sheave or pulley wheel is a pulley using an axle supported by a frame or shell (block) to guide a cable or exert force.
Examples of rope and pulley systems illustrating mechanical advantage. Consider lifting a weight with rope and pulleys. A rope looped through a pulley attached to a fixed spot, e.g. a barn roof rafter, and attached to the weight is called a single pulley. It has a mechanical advantage (MA) = 1 (assuming frictionless bearings in the pulley ...
Anderson Cooper — Anderson Cooper 360°. Laura Coates — Laura Coates Live. Kasie Hunt — CNN This Morning with Kasie Hunt. Brianna Keilar — CNN News Central (with Boris Sanchez) Boris Sanchez — CNN News Central (with Brianna Keilar) Sara Sidner — CNN News Central (with Kate Bolduan and John Berman) Jake Tapper — The Lead with Jake ...
ABoK. #1763. A Prusik (/ ˈprʌsɪk / PRUSS-ik) is a friction hitch or knot used to attach a loop of cord around a rope, applied in climbing, canyoneering, mountaineering, caving, rope rescue, ziplining, and by arborists. The term Prusik is a name for both the loops of cord used to tie the hitch and the hitch itself, and the verb is "to prusik ...
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