The function of a pulley is to lift heavy objects by changing the direction of the force on a flexible cable. It also consists a wheel with a groove in its outer edge and an axle. With the help of ropes, chains or cords, a pulley makes moving objects upward easier.  Pulley reduces the force given to get the work done.

The direction of the force required to lift an object is changed from pushing up to pulling down while using a pulley system. Pulley manufactures are to make hefty work more manageable and are classified as movable, fixed or combined. Multiple pulleys can also decrease the force needed to lift or pull the weight.

Pulley also functions to mainly distribute the weight evenly which sort of makes the elevator lighter. The pulley serves in many different industries for lifting loads, applying forces or transmitting power.

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