Question

what is pulley define briefly​

Answer 1

Answer:

A pulley is a wheel on an axle or shaft that is designed to support movement and change of direction of a taut cable or belt, or transfer of power between the shaft and cable or belt. ... Pulleys are assembled to form a block and tackle in order to provide mechanical advantage to apply large forces.

Answer 2

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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