what is Pulley?
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a piece of equipment, consisting of a wheel and a rope, that is used for lifting heavy things.
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Pulley is a simple machine and comprises of a wheel on a fixed axle, with a groove along the edges to guide a rope or cable. Pulleys are used to reduce the time and energy taken to lift heavy objects. Here, Load = the weight of an object Effort = the amount of force required to lift or move this object.
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