A gun tackle has a single pulley in both the fixed and moving blocks with 2 rope parts dividing the load of 100N. The mechanical advantage is 2, requiring a force of only 50N to lift the load.
Author: César Rincón
What’s the force in this point?
Diagram of a pulley system, demonstrating how pulleys facilitate the lifting of heavy weights (2004)
Submitted 3 days ago by Innerworld@lemmy.world to physics@mander.xyz
https://upload.wikimedia.org/wikipedia/commons/6/62/Polispasto2.jpg
Comments
lemmysmash@piefed.social 3 days ago
piranhaconda@mander.xyz 3 days ago
Somewhere between 100-150 N, depends on the angle that the rope on the left is being pulled at
OfCourseNot@fedia.io 2 days ago I don't think it can get as low as 100N, for that you would have to pull completely upwards. The shadow in the image implies a ceiling, so ~112N if we take 90° as the max angle. The 150N would be the only case with a completely downward force, if you pull at another angle the resulting force vector will be angled as well.
Onomatopoeia@lemmy.cafe 2 days ago
Wouldn’t it depend on how fast that rope is pulled too, adding in the acceleration of the mass?
lemmysmash@piefed.social 2 days ago
lemmysmash@piefed.social 3 days ago
It should be 50 N assuming ideal system (0 pulley traction), right? What about non-ideal systems?
Onomatopoeia@lemmy.cafe 2 days ago
Wouldn’t it be 100, same as the mass being lifted (well more really, depending on the acceleration of that mass)?
danekrae@lemmy.world 2 days ago
More in depth