Pulley sets.

Pulley Sets. In this pulley system, the Mechanical Advantage is 2, thus W2 = 2W1 for there to be equilibrium. If W1 is > than .5W2, then W1 goes down and W2 is lifted up.
UCB Index: 
A+80+10
PIRA Index: 
1M20.11
Demo Diagram: 

PIRA Taxonomy:

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