Wouldn’t it depend on how fast that rope is pulled too, adding in the acceleration of the mass?
Comment on Diagram of a pulley system, demonstrating how pulleys facilitate the lifting of heavy weights (2004)
piranhaconda@mander.xyz 3 days agoSomewhere between 100-150 N, depends on the angle that the rope on the left is being pulled at
Onomatopoeia@lemmy.cafe 3 days ago
OfCourseNot@fedia.io 2 days ago Nope. Right now the system is balanced, the rope is not being pulled just hold. To pull the weight up you need more than 50N, plus a bit more if we take into consideration the friction in the pulleys and in the rope itself.
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.
piranhaconda@mander.xyz 2 days ago
Yea that’s why I said max down force, didn’t want to do the math to find the resultant for a 90 degree to the left pull