PULLEYS Meaning and
Definition
-
Pulleys are simple machines commonly used to lift heavy objects or change the direction of force in mechanical systems. They consist of a wheel with a grooved rim, known as a sheave, which rotates on an axle or spindle. The rim of the pulley is often made of metal, plastic, or wood and is designed to hold a rope, cable, or belt.
The primary purpose of a pulley is to reduce the amount of force required to lift or move an object by distributing the load across multiple points. When a force is applied to one end of the rope or belt and pulled, the pulley system redirects the force through the sheave, transferring the load to another location. This shifting of force allows for easier lifting and greater control over heavy objects.
Pulleys are widely used in various industries, construction sites, and everyday applications. They are especially common in systems where heavy loads need to be raised or lowered, such as elevators, cranes, and weightlifting machines. By employing multiple pulleys in combination, mechanical advantage can be achieved, reducing the effort needed to lift heavy objects.
Pulley systems can be simple and consist of just one pulley, known as a fixed or single pulley, or more complex with multiple pulleys called compound or block and tackle systems. The number and arrangement of pulleys determine the mechanical advantage of the system, controlling the force and distance over which the load can be moved. Overall, pulleys are versatile tools that significantly facilitate work involving heavy lifting and force redirection.
Top Common Misspellings for PULLEYS *
* The statistics data for these misspellings percentages are collected from over 15,411,110 spell check sessions on www.spellchecker.net from Jan 2010 - Jun 2012.
Other Common Misspellings for PULLEYS
Etymology of PULLEYS
The word "pulleys" is derived from the Middle English word "polley", which was used to refer to a kind of movable wheel or roller. This Middle English term came from the Old French word "polie", meaning "pulley" or "roller", which came from the Medieval Latin word "poliva", also meaning "pulley". The Latin term is believed to have originated from the Greek word "polos", which means "axis" or "pivot". Ultimately, the etymology of the word "pulleys" traces back to ancient Greek.
Infographic
Add the infographic to your website:
