Why Snatch Blocks are AWESOME (How Pulleys Work) - Smarter Every Day 228

  • Published: 05 December 2019
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    If I did this right then these are Amazon affiliate links to purchase a snatch block. (I have no idea what I'm doing)
    $22 - black 8 ton - 5 stars - amzn.to/2DMR4s8
    $25 - red 8 ton - amzn.to/355WoTi
    $29 - orange 10 ton amzn.to/2OWQFdb

    We discussed Snatch Blocks on this episode of the No Dumb Questions podcast:

    If you'd like to 3D print the Snatch Blocks and pulleys we use in this video they are here: thingiverse.com/thing:4022579

    Read Plutarch's account of Archimedes:

    The wikipedia page on Block and Tackle is really good:

    I thought this was a great video about why you should put blankets on your winch cable: smpb.info/user/watch?v=gPba-34ARZY

    Chris Hadfield is a veteran Canadian Astronaut and a great friend of science. He engages the public often and is a great follow on twitter: twitter.com/Cmdr_Hadfield
    He can be contacted for speaking engagements here:

    Jeremy Fielding has his own RUclip channel which you can enjoy here!

    A special thank you to @MurkyWanders on Twitter for videoing the Atlantis exhibit for us.

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    Warm Regards,

  • Science and Technology Science and Technology

Comments • 11 290

  • SmarterEveryDay
    SmarterEveryDay   1 months back

    Snatch Block!
    I want to take a moment to thank those of you who support Smarter Every Day on Patreon. I'd also like to point out 2 things about this video.
    #1. You'll notice Jeremy Fielding is in this video. He's the "Contraption Fabricator" that's started working with me now because of your support on Patreon. He's a great designer, father, and friend. You'll be seeing more of Jeremy around thanks to those who support at https://www.patreon.com/smartereveryday/
    #2. If you'd like to 3D print the Snatch Blocks and pulleys we use in this video they are here: https://www.thingiverse.com/thing:4022579
    #3. I really enjoy KiwiCo and I think you will too. I got them as a Christmas gift for my children years ago, and it was a huge hit. It was after that experience that I reached out to their team and asked if I could advertise for them because of how good it was for our family. I think you'll enjoy it too. https://www.kiwico.com/smarter
    It was 3 things... I ended up pointing out 3 things.

    • russel finch
      russel finch  1 days back

      SmarterEveryDay you know what’s amazing ?....hands !
      You can smash rock with them with a hammer,also pick up rough rock,grab hot items ,Stroke an animal,feel the slightest bit of grit on a surface,punch,massage....all with hands!

    • J Jay
      J Jay  2 weeks back

      This was the longest add ever

    • Rimantas Liubertas
      Rimantas Liubertas  2 weeks back

      @melanieenmats you are right. Gears and pulleys are just more sophisticated levers. And with lever you lose distance but you gain force.

    • PumarisX
      PumarisX  2 weeks back

      @Ying Yen Lin It is basically a lever. Pulley is just a divider so if you have regular pulley (one wheel i.e. 2 ropes coming out of it) it means that your pulling force has been "doubled". Work carried out of course stays the same so your weight getting lifted traveled only 1/2 of your pulling distance. Adding another pulley to the setup again doubles the pulling force so now you would have 4x the force but only 1/4 of the pulling distance.

  • Darren G
    Darren G  10 hours back

    I was one of those guys that thought pulleys were cool but never real understood how they worked. Now I do thanks to you, and a great video to.

    • Mike
      Mike  11 hours back

      My wife pulls the snatch block all the time grrrrr......

      • danny yo
        danny yo  12 hours back

        imagine being blocked by snatchblock

        • ArchangelV11
          ArchangelV11  13 hours back

          Such a good episode, your kids are awesome

          • Eric Danko
            Eric Danko  17 hours back

            you need a field trip to a steel plant maintenance department! keep up the good work...

            • Tungsten Hexafluoride
              Tungsten Hexafluoride  18 hours back

              I literally was sitting here YESTERDAY thinking to myself "How in the world do pulleys give you an advantage...HOW TF DOES MAKING A ROPE GO AROUND A CIRCLE MAKE THINGS EASIER???" And then this video shows up in my recommended...

              • EGGINFOOLS
                EGGINFOOLS  20 hours back

                What about the diameter of the wheel on the pulley? How does that interact?

                • Central Intelligence Agency

                  That's a back injury waiting to happen.

                  • Blah Anger
                    Blah Anger  1 days back

                    A pulley is basically a lever on an axl.
                    But instead of a longer lever you just need more rope and pulleys.

                    • zerokmatrix
                      zerokmatrix  1 days back

                      Only Dustin can walk up to a work crew fixing a barrier and say "hey dudes, can I film your snatch blocks?" and they say "Sure, no problem".
                      And also message superstar astronaut Chris Hadfield and say "hey dude, can you film a little piece about using snatch blocks in space?" and he says "Sure, no problem"

                      • shubham kumar
                        shubham kumar  1 days back

                        Destin is such a wonderful guy ,I want to meet him in person..

                        • Josh M
                          Josh M  1 days back

                          Snatch block: When a girl invites you to go home with her but her ugly friend shows up and says she needs a ride home.

                          • Jonathan Parker
                            Jonathan Parker  1 days back

                            The current day “Mr.Wizard”.

                            • Dave Schidlmeier
                              Dave Schidlmeier  2 days back

                              It's called the working factor... the formula is... the number of ropes on the movable sheaves is the working factor of the set of blocks...if 2 ropes are attached to the movable sheaves the working factor is 2:1.. if 4 are attached its 4:1 and so on .. 8 on the movable sheaves is 8:1...you get 8 lbs of pull on the movable sheaves with each 1 lb applied forse on the pull rope... hence an 8:1 working factor

                              • James wingert
                                James wingert  2 days back

                                That Jeep’s front driver’s tire was looking pretty bald.
                                Just saying....
                                Great video...your kids are lucky to have such a smart & fun dad!👍

                                • John Doe
                                  John Doe  2 days back

                                  Couldn't call it a C - - t block

                                  • Xaverderschnitzelfan
                                    Xaverderschnitzelfan  2 days back

                                    I heard snatch bloxk that often, that I forgot the name of SNATCH BLOCKS in my native alanguage german.

                                    • Xaverderschnitzelfan
                                      Xaverderschnitzelfan  2 days back

                                      Can you adopt me please?

                                      • David Johnston
                                        David Johnston  2 days back

                                        Anyone else notice Mark Rober in the group shot at KiwiCo?

                                        • Eugene Coleman
                                          Eugene Coleman  2 days back

                                          @smartereveryday if I can find the pictures I'll send them. I once used a tree, a 10k lbs. tow strap, a winch, and a snatch block to pull a full sized backhoe out of about a foot and a half of mud

                                          • SØHΔM KØLΔMBE
                                            SØHΔM KØLΔMBE  2 days back

                                            snatch block counter :- 38
                                            just in case anyone was wondering

                                            • John Dough
                                              John Dough  2 days back

                                              So THATS where that name came from. I was curious of its origin. 🤓

                                              • romanmir01
                                                romanmir01  2 days back

                                                all of this and he doesn't explain why pulleys work. They work because the length of the rope that flows through pulleys gives the same physical advantage as a lever. A pulley is a compact lever.

                                                • TNecromancer • ML
                                                  TNecromancer • ML  2 days back

                                                  8:05 ¡MUY BIEN AMIGO!

                                                  • standard mail
                                                    standard mail  2 days back

                                                    And BTW, TRUST ME she DOES have an office or private space for the CEO calls that the plebs cannot hear. To pretend otherwise is condescension taken to a new level. Its VERY pukeworthy.

                                                    • standard mail
                                                      standard mail  2 days back

                                                      The sponsor lady has a rich IT Monied up hubby who got her start up cash. She is the epitome of silicon valley elite. Do NOT buy this shite.

                                                      • Chris Cole
                                                        Chris Cole  3 days back

                                                        FYI there not pulley's. You are using a sheeve. A pulley is used to run belts and a sheeve is for ropes to run through to help aid lifting device's.

                                                        • Coffee
                                                          Coffee  3 days back

                                                          Your like the Snatch Block Whisperer. Nice video.

                                                          • Johnny Walker
                                                            Johnny Walker  3 days back

                                                            A snatch block is the way to go ..
                                                            Snatch a kiss , kiss a snatch.

                                                            • W.D. Callahan
                                                              W.D. Callahan  3 days back

                                                              So a transformer is an electrical pulley. Right?

                                                              • Mike Bellini
                                                                Mike Bellini  3 days back

                                                                8:44 SNATCHBLOCK. I'm going to be shouting that at people, but they'll have no idea :/

                                                                • Dylan Cla
                                                                  Dylan Cla  3 days back

                                                                  I figured out the mystery of all mysterys THE PYRAMIDS BUILT WITH SNATCH BLOCKS.

                                                                  • Purandar Malleshi
                                                                    Purandar Malleshi  3 days back

                                                                    You are the best Teacher.

                                                                    • Tyler Geurkink
                                                                      Tyler Geurkink  3 days back

                                                                      Could you do an episode on springs. Like how springs absorb energy and shoot it out. The science behind it and how it’s almost necessary to have a spring in a modern day rifle.

                                                                      • Vazfx Design and Fabrication

                                                                        This is the best ever. Great visual displays

                                                                        • Levi Pack
                                                                          Levi Pack  3 days back

                                                                          i was tightening my boots before work and it made me realize that tightening your shoes kind of works in the same way as the pulleys making it much easier to make the shoe hug your whole foot

                                                                          • Brett Veazie
                                                                            Brett Veazie  3 days back

                                                                            Question, and possible answer.... The blanket over the winch cable during the jeep pull. Was that there to dampen/restrict whiplash from the cable in case it broke?

                                                                            • Schmelly G.
                                                                              Schmelly G.  3 days back

                                                                              I'm pissed. A lil girl with bigger balls than me. She was Ziplining without any fear. I'm terrified of heights.

                                                                              • Rob Behler
                                                                                Rob Behler  4 days back

                                                                                This is an amazing video! I can't believe I didn't know this before. Like you said, it's like "oh yeah, because of pulleys" and you don't actually understand it until now! Thank you!

                                                                                • Jmhm17
                                                                                  Jmhm17  4 days back

                                                                                  Thanks to Matt for mentioning this, now it pops up in my suggestions... ai is getting out of hand

                                                                                  • Nikola Tesla
                                                                                    Nikola Tesla  4 days back

                                                                                    What still confuses me is that you are not suppose to get more out then you put into it however it appears that is not the case with pulleys....???

                                                                                    • Ramjan Khandelwal
                                                                                      Ramjan Khandelwal  4 days back

                                                                                      SNATCH BLOCK!!!

                                                                                      • Joao Viterbo
                                                                                        Joao Viterbo  4 days back

                                                                                        Please do a video abait the caming mechanism that is used in lots of rock climbing gear

                                                                                        • Daniël Crompton
                                                                                          Daniël Crompton  4 days back

                                                                                          Were those the Britannica's Great Books at 10:10.

                                                                                          • Gauge White
                                                                                            Gauge White  4 days back

                                                                                            How... Did I get to this video. I started off my morning watching Mike tyson highlights... Now I'm watching this...

                                                                                            • xKuruh
                                                                                              xKuruh  4 days back

                                                                                              Off the ranch sent me here

                                                                                              • TheNeaL777
                                                                                                TheNeaL777  4 days back

                                                                                                Honestly, I’m slightly disappointed that you didn’t animate the mathematics of what all is going on.
                                                                                                I’ve been thinking on this topic lately from the standpoint of levers: weight, force, fulcrum, classes A, B, and C.
                                                                                                Doing the weight & balance of aircraft we calculate the weight, arm, and moment of fixed load and useful load relative to the datum and find its center of gravity relative to center of lift.
                                                                                                On bicycles, it’s all levers. The sprockets are like circular levers. Think of the center of the circle as the fulcrum. The radius as the lever. Shifting gears gives you a longer or shorter lever.
                                                                                                Same thing with pulleys. The radius is like a lever. More pulleys gives you more leverage. Distance traveled of motion when pedaling a bike, fast & easy when you downshift or slower & harder when shifting up. Now I’m wondering if there’s anything out there like pulleys with derailleurs.