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A Pulley is a wheel on an axle that is designed to support movement of a cable or belt along its circumference.

Pulleys are used in a variety of ways to lift loads, apply forces, and to transmit power. The drive element of a Pulley System can be a rope, cable, belt, or chain that runs over the Pulley inside the groove. This system is included in the list of simple machines identified by Renaissance scientists. The simplest theory of operation for a Pulley System assumes that the Pulleys and lines are weightless, that there is no energy loss due to friction and that the lines do not stretch.

We offer two Pulleys exhibits which enable visitors to experience the difference of lifting buckets full of water with one Pulley compared to lifting a bucket with two Pulleys. Our Pulleys enable to lift buckets that fill up a leaf swing which when full turns over, emptying the water back to the pool.

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