I’m storing this in my files .

@@christinamoneyhan5688 I can’t express how great this video is for the learning process! I teach it exactly how he explains it!

Nervous about the exam??!?? How about "nervous about being able to use this to save a life" ?? What good is an A on an exam if you can't apply this when someone's life depends on it?

@Bobby T thank you

@Bobby T Yes!!! Thank you for this practical, helpful explanation! I spent my evening in the hay loft of my horse barn trying to figure out how to use my pulleys to lift my hay elevator up and down by myself. Sick of having to ask my neighbor for help. There's got to be a way. So I came in the house and started looking it up on KZfaq and I found this video, which is great, but come on, I'm 43 years old. I'm not trying to memorize answers for some 4th grade science quiz. I've got a farm to run here, and actual real-life problems to solve. I just need to move my dang hay elevator! Really don't care if it's even or odd or what's the proper term for each end of the rope. the only "change of direction" that matters to me is UP. As in get the HAY UP and in the BARN before it starts snowing again here in WI. Your explanation, with the cow example, is a beautiful illustration of why our education system needs to support the trades. Mechanics, welders, electricians, plumbers, heck just a guy who is handy and knows how to fix things - that is the foundation for everything else we may hope to accomplish as a human race. Theories are fun, but we have got to be able to get things done. Sorry for the long rant, I'm very tired.

Rule 6... there is no rule 6.

We use progress capturing prusik cord for a quick and easy reset.

Yes

Good question. Can anyone confirm mike millars answer???

sadly, no. the weight/load, if tied off at the anchor, can EVEN be greater than the initial item being lifted, at the anchor. i've been led to believe. i'm not a rope/pulley scientist, but the mechanical advantage gained from all the pulleys you can throw at a weight, at some point have to be supported at a point ... if you have the same 300kg single line holding your 1000kg system at that point .... my guess is "snap"

No. You never want to exceed the weight limit of the rope or the anchor. You can easily apply to much mechanical advantage in a system and break rope and hardware and destroy your anchor.

Mike , if I would want to pull a 12,000 pound object you are telling me I should us a 12,000 pound rated rope ? If this is true the only advant@ge of a pulley set up is to make pulling the 12,000 pound object easier. Correct ? Thank you.

250 is nothing for any rope access pulley. No need to get an expensive, high efficiency pulley. ISC has some good ones at a better price than fancier pulleys like PETZL or Rock Exotica.

SMC CRx crevasse rescue pulley $16.99 and will more than handle whatever you can lift in the gym

Nifty lift

Ugh!...beginning stagehands sometimes make this mistake too...always look for "V" shapes with the diagonal chords of stage truss

That is a Prusick

One would reset the piggy-backed line by sliding the prusik back down. A progress capture device-like another prusik-is used at the anchor to hold the load while the reset is done.

Kareem If you added an additional pulley at the top of the blue rope you could pull down. To reiterate, your first blue pulley is on the bottom like in the video. Then you add a final blue pulley to the system at the top. But this last pulley would be a redirect and give you no more mechanical advantage (rule #3). It would still be 10:1. At least that's how I see it, but I'm wrong 51% of the time.

@@trevorlsadler Thanks for the tips guys. I also conducted some simple pulley-experiments of my own. I documented one of them at this link, which directly opens, but, only if you open it into an "INCOGNITO-BROWSER". So, right-click on it first, then click "incognito". kzfaq.info/get/bejne/jbhplqd3ndaopGQ.html&lc=Ugx6HDOB7OcS1T5fJRh4AaABAg

this vid is my fav and helped me the most so far. so I'll try to apply what I learn here to more stuff to "figure it all out". though I am confused about last part still unless I'm making innocent mistakes. the 2 to 1 at the end there, i have 1 or 2 problems with? it looks like to me in theory like it's doing nothing? like it's the same as if you just tied the original rope off on the ceiling (which might do literally nothing?) but u throw in a pully (which would be exactly the example you asked about in beginning of your question oddly enough) in order to just pull or move the rope some more. wouldn't that last pully be nothing more than a change of direction anyways (meaning you are simply making yourself another physical part of the anchor thus adding no extra strength or mechanical advantage). so then I started thinking okay so what if I added another pully at the end then that new one would become my change of direction making the rest another 2 to 1 advantage (and here is where I'm most likely making a mistake as I personally don't understand how that simple 2 to 1 is multiplying the 5 to 1 to make it 10 as in my mind it's literally nothing more than just another 2 to one on the original system. But let's put all that aside and just look at the exact system in the video at the end there even if the last part multiplies the rest it still looks like not a 2:1 but 1:1. I notice he has the end of the rope draped through the pipes on the tower which sparked me thinking if he pulled on that it would kinda make it a 2:1 (except it's not a pulley so adds friction so you're pulling against yourself as much as the rope based on the diameter of the bend and surface tension so uh i guess cancels out a significant amount of mechanical advantage) uhoh now I'm looking at the 5:1 part and yeah I know he has 4 pulleys but according to the rules isn't the last pulley not a pulley but a change of direction. well I feel pretty stupid now so if nothing else hopefully the time you took to read this comment is worthwhile entertainment. but if the 5:1 is actually a 4:1 and the 2:1 is actually a 1:1 wouldn't that just make it an 4:1 (or if multiplied 8:1) . I'm sure the entire rest of the video is 100% correct no doubt. I'm just personally trying to find errors in setting up a tarp for camping wrapping around a tree using a truckers hitch (which personally I think the friction on the bark of the tree counts as NO ADVANTAGE and the truckers hitch is literally the only pulley meaning it's a change of direction adding NO ADVANTAGE. haha this is hilarious subject to ponder thanks anyone who read this far and loveya clearly i have more thinking to do if i'm to understand pulleys. oh one last thing the next step as orignal comment reminded me, testing the lenth of rope pulled to the distance moved by the load if it really was 8 to 1 or 10 to 1 that'd suggest it's working to whatever extent. this is kind of importatn too cause thinking of example where you are pulling thousands of pounds in survival situations like winching a car one guy showed by doing a simple 2:1 (which I think consisted of nothing more than anchoring the line back on the winch or something) clearly showed one side of the load moving twice the distance of the other side supposedly putting to rest debate on the subject. I think I'll have to go start testing stuff personally to figure out where my confusion lies as I don't want to be a liability in a dangerous situation haha sorry for making anyone read my long comment but who knows maybe i did find innocent mistake or once i "figure it out" can explain easier to others

@@rho2888 You can run all pulley test really cheaply, without pulleys, but with steel O-rings, available at tool stores, real cheap. After documenting your test results, then, if you need to use it for lifting heavy stuff, you can advance to using marine-pulleys, and marine-ropes, because they are the most compact & the strongest!!!

That is a Bearpaw style rigging plate.

It's attached to a moving pulley so it adds 1 unit of MA. Stationary pulleys are just a redirection.

This is me, 7 months later, I'm going to attempt to answer my own questions. Hall team is.... um, I still don't know. Anchor is basically the end section of the rope, (no more pulleys) either it's tied off (anchored) at the top or bottom, or else your own hands take the place of a tied off point, so your hands are basically the anchor. Lastly, "IT" is the rope. Did I get two out of three?

Also, Rule #1 - if the Rope is tied off at the anchor. "IT" is the rope