Pulley System

What is Pulley System?

A system of wheels and a continuous rope used to redirect an applied force, and — once a moving pulley is added — to multiply it through mechanical advantage. A block and tackle stacks several pulleys together, letting one person lift a load many times heavier than they could manage unaided.

The five clues

Engineerdle #28 described Pulley System with five clues, revealed one at a time from hardest to most direct. Each clue points at a different property of the concept.

1. 01A machine built from wheels, grooves, and a single continuous rope.
2. 02A single fixed one only changes the direction of a pull, not its magnitude.
3. 03Add a moving one and suddenly the force required actually drops.
4. 04A block and tackle can stack several together for a dramatic mechanical advantage.
5. 05A system of wheels and rope used to change the direction of a force or multiply it via mechanical advantage.

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