Complex Pulley Bucket Instructions

Brackitz Building Toy Complex bucket instructions

The Brackitz Complex Bucket is different from the Simple Bucket in that it has pulleys attached to the top of the bucket.  By adding pulleys to the top of the bucket, the mechanical advantage is increased, significantly reducing the amount of force needed to lift the bucket.  This bucket system is used in Brackitz Archimedes Crane and Brackitz Flying Crane but can be adapted to any of the pulleys builds. 

Here is a short video on how to build your bucket:



Points for Discussion

Who invented the pulley? 

How do pulleys make work easier?

Can you calculate the amount of work done by a pulley? (Here is a Youtube  video by Step By Step Science showing the calculations!) 


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