Break your brain with pulleys

[Retro]

You think you know pulleys right? Those wheels with the rope going round them, kinda simple and obvious, right? Well, maybe not quite so much as The Action Lab explains. Break your brain trying to understand this.

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[Mars]

I like the way this guy explains things, and the fact is that pulleys are complicated creatures, all about forces pulling and tugging.
Reminded me of days long gone, school days, and the physics and applied math lessons. Lots of applied math there in them pulleys
I liked the book experiment, a good one to demonstrate the action of forces upon an object; the consequence of forces moving in different directions are clearly demonstrated.