PULLEY Meaning and
Definition
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A pulley is a simple machine comprised of a grooved wheel and a rope or cable looped around it. It is primarily used to transmit force, change direction, or amplify motion. The wheel of a pulley is typically made of metal, wood, or other durable materials, and can have either a flat or grooved surface. The grooved design allows the rope or cable to stay in place and prevent it from slipping off.
Pulleys are commonly found in various mechanical systems and play a crucial role in the functioning of machinery. They are often used in combination with other pulleys to create a mechanical advantage, enabling a person to exert less force to lift heavy objects. By redistributing the force required to move an object over multiple ropes and pulleys, the load becomes more manageable.
The operation of a pulley is quite simple. When force is applied to one end of the rope or cable attached to the pulley, the wheel rotates, allowing the load to be lifted or moved. The use of pulleys reduces friction and makes it easier to lift or lower heavy objects. They are widely utilized in construction, transportation, and manufacturing industries, as well as in various everyday applications.
In summary, a pulley is a mechanical device that consists of a grooved wheel and a rope or cable. It serves to transmit force, change direction, and increase the mechanical advantage. Pulleys are critical components in many systems, making it easier to lift or move heavy objects by reducing the amount of force required.
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One of the six mechanical powers, consisting of a wheel turning on an axis, on which a rope or chain runs in a groove.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
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Etymology of PULLEY
The word "pulley" has its origins in Middle English, derived from the Old French word "poulie". This Old French term was in turn derived from the Late Latin word "polida", meaning "a little pole" or "roller". The Latin word itself is believed to have come from the Greek word "polos", meaning "pivot" or "axis". Thus, the word "pulley" ultimately traces its roots back to ancient Greek.
Similar spelling words for PULLEY
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