Assertion: pulley | /r/CapableOf | move up as the load
Facets:
Source sentences:
text: In the Figure there are four freely rotating pulleys, two on the upper block, which remains fixed, and two on the lower block, which moves up as the load W is lifted; one end of the rope is anchored to the upper block.
text: In my examples, one block is fixed at the top and the other block moves up with the load.