Block And Tackle
Block and tackle is a system of two or more pulleys with a rope or cable threaded between them, usually used to lift or move heavy loads. The pulleys are arranged such that the mechanical advantage is multiplied, making it easier to lift the load. The block and tackle system is commonly used in maritime operations, such as hoisting sails or lifting heavy cargo onto a ship. The number of pulleys used in the system determines the mechanical advantage, with more pulleys resulting in a greater advantage but also requiring more rope or cable. Block and tackle systems can be manual or powered, with powered systems using electric or hydraulic motors to turn the pulleys.
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