Who's good at pulleys?

[overst33r]

I have to figure out the tension, T, coming off the pulley on the right. The angle is part of another system, so disregard that.

http://i211.photobucket.com/al...1/mariok2006/Scan1.jpg

I calculated the above. Am I right in my assumptions? If not, please tell me where I went wrong.

 

[WildHorse]

``

 

[Eeezee]

Pulleys are easy to use, just pull on the rope!

 

[Born2bwire]

Originally posted by: Eeezee
Pulleys are easy to use, just pull on the rope!

Well, there can be some complications.

 

[DrPizza]

Originally posted by: Born2bwire

Originally posted by: Eeezee
Pulleys are easy to use, just pull on the rope!

Well, there can be some complications.

I actually assigned that a couple years ago as an extra credit assignment - essentially, calculate all the accelerations & speeds.

 

[toslat]

Havnt done this in a long while so take with a bag of salt.
Would advise u start from the 500lbs end and do free body analysis for each of the weights and free pulleys (lower two).
I believe u will assume the pulleys are frictionless and have zero mass, and that tension in the ropes are constant (note: there are 2 rope segments). I think in the end T=750

 

[Safeway]

Make sure you all post in the Member Gallery! Link in my signature!

 

[compman25]

Just get a fork lift and pick up the item.

 

[Mr Pickles]

I dont get it. There's like ropes coming from the center of the pullys. And there's like two pullys with 3 ropes coming from them...

 

[Modelworks]

Originally posted by: MrLee
I dont get it. There's like ropes coming from the center of the pullys. And there's like two pullys with 3 ropes coming from them...

yeah it looks like someone on crack trying to use a block & tackle

 

[trOver]

redraw and post again

 

[toslat]

Originally posted by: trOver
redraw and post again

why?

 

[overst33r]

Originally posted by: toslat
Havnt done this in a long while so take with a bag of salt.
Would advise u start from the 500lbs end and do free body analysis for each of the weights and free pulleys (lower two).
I believe u will assume the pulleys are frictionless and have zero mass, and that tension in the ropes are constant (note: there are 2 rope segments). I think in the end T=750

Your answer is correct. Someone showed me at school today. Thank you for your help.