Human-powered hoist - GIF

[Altair]

Human-powered hoist.




Previously:

Body weight roofing material hoist - GIF
Motorcycle-powered hoist - GIF
Lego hoist lifts 195-pound rock - video
Excavator track hoist - GIF
Dirt trench hoist - GIF

[Karl_H]

Do they take turns, or does "stripe shirt" have to climb to the landing every time, and "solid shirt" only has to climb half way up?

[Elizabeth Greene]

I've heard this one before!

The law of the attraction of gravitation was well illustrated on Cedar Street the other day. A man stood holding a rope which ran over a pulley and into a second story window, where it was attached to a barrel containing about 600 pounds of iron chain. The barrel was poised on the sill of the window, and by some mischance the man in the building let go of it without notifying the man on the ground. Result, illustration of the law of gravity, barrel down and man up, as he retained his grip on the rope.

Then, to complicate matters, the barrel struck the ground so hard that the bottom fell out, the contents following, of course. And again the gravity was demonstrated, for this made the barrel lighter than the man, and down he came with a thump, and the barrel went up.

Then he made the mistake of his life by letting go of the rope, that he might feel his bruises, for the barrel, being heavier than the loose end of the rope, dropped swiftly downward and struck him fairly, just as he was struggling to his feet, again vindicating the attraction of gravity.

But the spectators failed to realize the gravity of the situation.

[ductape]

A Bricklayer's Lament. Learn from Newton or get learned by Newton.