Part 9044 in the never ending list of "things I find on the internet and then get grumpy about." This thing:
|I found it here.|
It's not magic. Let's consult an expert:
So I chopped the problem into the identical quarter problem, assumed we only need to deal with the vertical motion, and pulled out my "you learn this in the second physics class you ever take" abilities:
How does it work? It's suspended from the hooks in the ceiling, duh. How much weight can you add to the bucket before it falls down? However much you want, as long as you don't increase the tension in the string so much that it snaps.