Why Snatch Blocks are AWESOME (How Pulleys Work) - Smarter Every Day 228
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- Опубликовано: 4 дек 2019
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Read Plutarch's account of Archimedes:
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The wikipedia page on Block and Tackle is really good:
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I thought this was a great video about why you should put blankets on your winch cable: • 4x4 Winch Dampeners | ...
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Warm Regards,
Destin 
Наука
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 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: 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. www.kiwico.com/smarter
It was 3 things... I ended up pointing out 3 things.
I think showing the LENGTH of the rope you pulled with 2 pulleys v.s. 1 pulley will explain everything much better. It took me forever to finally understand. Maybe I am just an idiot.
Edit: It's like going 10mph(force) for 2 hour(rope length) vs. going 10mph(force) for 1 hour (rope length). You get more out of it. That's how I understood it anyway.
You also have to remember when setting one of these up that the max you can lift/ pull is the weight limit of the cable or pully
Hey man, all your videos are fascinating! Thanks!
I carry rope and carabiners while hunting to set up pulley systems to get large game up steep inclines. The input end also helps me climb up at the same time. Carabiners have much more friction, so they hold the load in place better.
Destin, You could have used a third scale, that would be holding the other end of the rope, the one that is fixed and does not move.
Also, It is very interesting how the flatten unfolded multi pulley was not moving uniformly, indicating each disc excreted different force. It would be interesting if you replace it with separate pulleys each one holding separate weight (all weight would be with equal mass).
People are really going to be really impressed when I bring snatch blocks to the gym.
This comment is underrated
It's more funnier when you can make a video of it
Love it
What did you max out on
Your comment is double entendre comedy gold.....well played sir
Kid: "Hey dad, why did you call my sister Rose?"
Destin: "Because mom loves roses"
Kid: "Thanks, dad"
Destin: "No problem, snatch block"
Don't forget laminar flow
This comment is amazing
@@JDmake The older brother.
Snatch Block would be a good name for a dog
@@MrE_ Or two separate dogs: Snatch, the hunting dog and Block, the bulldog
The guy that stopped to help you gave me a big smile too, hands weathered from what must have been a lifetime of physical labor gave and instantly knowing what to do, how to help and taking the time out of his day to stop for a stranger, very respectable and heartwarming.
Prolly a white supremacist, and oppressing the LGBTQs too?
Wear out or rust out
You ever notice that people who stop to help others are always white? I mean there are exceptions I'm sure but I just mean like the heavy majority are white guys
@@chayneznfayme (i liked so it would say 420). workers look at hands, managers look at shoes, good leaders look at character. you need each one to make the world go round.
@@chayneznfayme Given he wasn't standing up straight, and could have been as young as 50, I'm sadly guessing he wore out.
This man could sell snatch blocks to a snatch block salesman
Well where do you think they get their snatch blocks from?
He eats snatch also
"Pulleys are my favorite things in the whole world."
Laminar Flow - "Am I a joke to you?"
Hey, Folks! Prince Rupert’s Drop - “just what am I to you then?”
@@Talostd He leaves so many old flames in his wake. What a heartbreaker.
If someone makes a laminar flow snatch block we'll lose him
Was it just me or did his accent get stronger when working with the old guy.
Yes, hahahahha
People's voices and accents change depending on who and how they're communicating to/with
Or you picked up on it more b/c the other guys accent was thicker so your ear became more tuned for it.
Imagine he met goonzquad
because all you need is a "yeeehaa!"
A rule of thumb we always used for figuring out mechanical advantage for rope rescue systems was, if the pulley (or snatch block) is moving with the load, it is providing a mechanical advantage. If it is not moving with the load (i.e. it is attached to an anchor point not a part of the load) it is only providing a change of direction.
Yes this is true. Good way of thinking about it
This is how I learned it when setting up a homemade lat pulldown in my gym. You don’t want the system to give you advantage you just want it to offer resistance in the desired direction.
You also can’t afford having 2 to 1 ratios of distance. You want the weight to move 1 to 1 what your arms are doing. Otherwise you would have to double the weight to counter the advantage you’re getting. Gym equipment is, of course the opposite intention of many pulley hoisting applications.
9:08 so does this mean when they pulled themselves there was no mechanical advantage...as the pulley was fixed
@@HalleyRaiI was thinking the same
I think in this case because the winch is moving with the load it accomplishes the same thing.
Yes pulleys are amazing but always remember the safe working limit of your cable / line / rope / strop etc quickly becomes the governing factor. Great production by the way, makes learning stuff fun !
Shouldn't matter much, As you get more blocks in the load your line load reduces. If you have a 4:1 setup then your total load is divided by 4 and that's how much is on each line.
So if you want to lift 1000 pounds a straight pull is of course 1000, a single traveling block causing a 2:1 pulley is 500 on each line as well as a 2:1 mechanical advantage so it both cuts the line load in half and doubles the pulling force, a 3:1 does the same its 3 times the pulling force and line load is cut into 3 so you are at 333 pounds per line. If you want to get real complicated you can factor in the angle at which each line is at and that chances the numbers as the farther from 90 degrees or parallel lines the less mechanical advantage and the less line reduction you have.
@@towtruckaj but you still have the line lifting a 1000lb object at the end of the day
@@ionbusman2086 not really, with my 4:1 for example you are effectively turning 1 line into 4, so it’s really one long line that runs through a bunch of blocks but it acts as if there were 4 because both your mechanical advantage and line load are effected, for each moving block in a perfect world you get double the pulling force and line load is cut in half, so for a 4:1 moving 1000 pounds you would need to pull with 250 pounds of force and each line would have 250 pounds of force on it, so to move 1000 pounds a 250 pound rated rope would work. It’s fairly simple until you start getting into the angles of the blocks and compounded pulley setups.
So yes in short the object weight doesn’t change you are still lifting 1000 pounds, but with pulleys you can move that weight with a lot weaker equipment and a lot less force.
@@towtruckaj But where the line ties to the 1000lb object, that's the weak point
@@ionbusman2086 what you are describing isn’t a proper mechanical advantage setup, to achieve mechanical advantage the blocks have to be on be load, if you have just one line actually attached to the load no matter how many blocks you have unless it’s a compound setup you don’t have mechanical advantage, for my 4:1 example you would have 2 snatch blocks on the actual load and 4 lines 2 for each block. What you could do if you could only attach one line to the load is have one heavy piece of rigging rating for the full forces then you could compound it and apply mechanical advantage to that one line, so like a 1000 pound cable sling with 250 lb rated rope in a 4:1 connected to that cable.
I love how dustin’s accent magically reappears when talking to other southerners.
From my personal experience that happens more or less per instinct and you have to 'snatch out of it' as an active decision.. 🤓🧐
Lol I’m from the Midwest west and I work for a company that does work all over the country and for whatever reason I start to talk like that when speaking with that southern accent on the phone. 🤣 no idea why lol. Same when I hang out with my hick friends 😆 I say creek but when hanging with them it turns into crick lol
I'm from Louisiana and people ask me if I live on the east or west coast, it's so weird
I used to live in the super deep south, but I've since moved to the Midwest. Sometimes I catch my southern accent coming out when I generally don't speak with one.
@@jonnyh3559 Code-switching
I would have died if the sponsor was SnatchBlock.
It so was
I was SO waiting to hear the sponsor too! They better give him something for this free commercial! LOL
I'm only 8 minutes in, and now I'm disappointed.
it a type of pully, not a company
My girlfriends mother is a snatch block
Hey Destin, I bought some Snatch Blocks after this video came out (Same ones you used). Never used them but I got to today! We used a double snatch to lift up a heavy piece of furniture up some stairs. Only knew how to do it because of this video.
Your enthusiasm for science and engineering is contagious! We've got snatch blocks on our wish lists now! We have also loved kiwi crates, my oldest spends hours building and playing with the awesome things they send her. Thank you for your video.
Destin : This are like, my most favorite thing in the world.
Laminar flow : am I a joke to you
I thought of it
Kaustubh Manchekar NO I DID!!!
He said one of my most.
This is*
Destin : This are like, my most favorite thing in the world
His children: are we a joke to you
Never seen someone so exited about physics as this guy.
Then you should watch physics girl. She is really exited about physics too
I have seen, he is was physics teacher...
was thinking the same thing
True.
He's snatchblockphilia
I am so happy I was recommended this by RUclips. This guy was fun, I loved the interaction with his kids, and all the visuals and everything about the way he teaches! The snatch block was awesome and now I’m thinking how I can use something like this at my construction job!
I love how you transmit your enthusiasm about understanding how things work, great work!
I felt like I was watching a really long advertisement for a product called snatch block
this brought me back to elementary school, we had some great teachers there.
It’s like snatch block and oxy clean/flex tape had a baby.
snatchblock!
If only all advertisements were this informative and interesting!
Tired of not being able to pull stuff up?? SNATCH BLOCK!
This guy is the physics teacher we hoped for but never got.
@@SharpObserver1A You alright there?
@@SharpObserver1A could you explain then?
@@SharpObserver1A prove your statement
i had a physics teacher like him
My physics teacher had the same energy tbh! I wasn't great at physics but I took as much of it as I could because of him. Also he showed us Paul Hewitt physics vids!
This was very, very informative and enlightening. Thank you for taking the time to demonstrate all key facets of pulley utilization, and the mechanical leverage advantage that is achieved. It's also good to see Jeremy, as I have watched a great many of his videos (if not all!) on electrical motors (he's genius). Thank you for putting this out. God Bless.
first, thank you. your willingness to share the power of knowledge is much appreciated. So, years ago, we had a tow truck (an old P.T.O unit with a twin boom system) that we called the "School Marm". So named because on the side door of the equipment locker was the mathematical calculation required for that tow truck to right a capsized battleship. A single, dual line wrecker that weighed in at about 14,000 pounds and delivered maybe 250 horsepower carried the mechanical power to drag a hypothetical battleship, that would weigh in at more than 40,000 tons, back to an upright position, made possible by the mechanical advantage of the mundane pulley.
Well, that's my story. And i am sticking to it. Aloha.
40,000 tons?
I love hearing Southern folks around other Southern folks, our accents get 100x stronger. Destin is no exception
Have you heard Hannah Barron's accent?
I’m from Tennessee and I’ve noticed that everyone seems to do that. Is it like a subconscious peer pressure on how you should talk? I can’t figure it out.
I live in another country and speak a different language, but the same thing happens here haha
I’ve noticed this also. I have a little draw but it gets way worse around certain people. It’s like we’re trying to out-draw each other.
@@JerryDLTN I love her, have you heard Ginger Billy?
“Pully are my favourite things in the world” Laminar Flow: Am I a joke to you?
now hear me out here... even though I know its impossible, but a laminar flow, but around a pulley...
What an in the know comment! That was in the Veritasium combo show wasn't it?
The Real Noom ::: yeah, Real...look closely at wooden pulleys in 2nd HandStores/Antiques, they may be Lignum Vitae.....
@@yendorelrae5476 indeed
Excellent and easy to understand explanation of pulley systems. They always seem easy when you look at it first, then become more difficult when you start to think about how it actually works.
Jeremy is extremely smart and a great teacher. You are as well. Thanks for sharing your videos with the rest of us!
I love how Destin's accent thickens so much when around other Alabamians
They walk in herds... They do walk in herds.
CODESWITCH: ENGAGE
Code switching. We all do it.
We do that literally all the time, I think the southern accents are fake because we only sound like that when talking to other Southerners. Also some won't take you seriously if you don't sound like that
"I should get back to mah truck" - 16:27
Destin: "These are like my favorite thing in the world"
Laminar Flow: "am i a joke to you?"
prince rupert drop to laminar flow: i get it
Destiny’s wife like am I a joke to you
Crustcheese THANK YOU!
Hey Destin. I just used the "snatch block" technique with a come-along to get my tractor un-stuck from a pile of manure. THANK YOU for saving me from having to dig it out the poo! You really saved me.
I am stoked I found your fantastic channel! This was a fantastic explanation of the mechanical advantage of pulleys!
You must respect the wires under tension. If they snap, they can kill.
just like Thanos do
Ok Can’t blame u if I want to shoot me lol
Well... Mythbusters kinda showed it's not That likely the get killed by a wire.. but never go under a load.
I noticed in the video when they pulled the jeep with the wench while it was in gear there was a blanket draped over the cable in an attempt to mitigate the force in the case that it actually did go down like that. Still a worthy note sir.
I seem to recall a video of Army engineers stepping ON the ropes of a multi-pulley setup if they had cause to traverse their setup. The reasoning being that if the rope did snap as it was crossed, the whiplash would be mediated.
"you cant push a rope"
well after a bottle of whiskey, im still gunna try
Thata boy.
I pushed six ropes yesterday. They were on the outer edge of a shelf and I pushed them further back in. Pretty awesome, huh?
@@kittyhawk7060 Calm down, Satan.
Geez Louis.
You know it!
Clearly you’ve never tried Viagra.
I am 69 years old and I've never seen two guys so happy to use pulleys in my life. Great video!
Man, your video brought a wide smile to my face this evening. Your enthusiasm just makes me so happy. The best part? I had never been able to *really* understand pulleys, and your video helped quite a bit. Your video just made my day.
Snatch block!
“Yo dawg, here’s your warship” is probably the best thing I’ve ever heard said on this channel
Destin: "Pulleys are like my favorite thing in the world."
Laminar Flow: "Am I a joke to you?"
From the literal standpoint is laminar flow not a thing... :o)
Literally stole my comment before I could make it, almost word for word!
next video: laminar snatch blocks
Literally the comment I was going to make... xD
Yep, I was scrolling down till I saw a laminar flow comment.... didn’t take long, thank you!!!
Hope you guys had a great time in Costa Rica! What a wonderful video. It "pulled" my attention all the way to the end and helped me understand the mechanics beyond just doing FBDs and writing numbers on paper.
LOL I am from Cullman, Alabama. I feel you about most always coming across people who just have “know how.” I finished assembling a cheap small 2500lb winch today (welded it to an old truck receiver).. and how I have an old disc up in the woods I gotta drag out. Only have 1 snatch block… until tomorrow haha
Man, your enthusiasm and excitement about physics is infectious. This is the kind of stuff that gets kids and adults alike excited about learning.
Agreeeed I used to hate physics never understood it until I started watching these videos they're so captivating and educational
I don't agree. He's impressed with the mechanical device without really understanding what makes it work. This is primary school physics.
frl
And what I admire the most that there are just so many sure signs that it's genuine! He approached random workers because they had a SNATCH BLOCK. Hahahaha!
... all over the world!
"Yo dawg, I hear you like pulleys."
Never knew I needed to hear that today.
Destin is an OG memer
"I attached a pulley to a pulley so you can pull while you pull"... well, it does make sense.
I thoroughly enjoyed and appreciate your video, the information you provided, and the way that you presented it. I am working on a project that will require me to go the opposite "direction". I will be needing to pull a lightweight object very fast over a long distance, while pulling a short distance with a substantial power source.
This is awesome and something I'll be incorporating to the back of my ute canopy to lift heavy things onto the back. Just what I needed months ago when I lifted something too heavy and herniated a disc. Live and learn! Thanks for the great video
I love how much Destin’s accent comes out when he talks to other people from the south. Especially when he’s so excited about snatch blocks.
Code switching!
I wasn't sure who was talking at that moment 😂
accent ??
@@billledbetter2361 His inflexion rolls a lot more (like, more becomes 'mo-e') as soon as he talks to people on the field. While on camera he uses a less inflexed speech.
@@KalahiMd I am an Alabama boy myself. He just speaks "normal" to me!
I like how he teaches by repeating himself and breaking everything down. Wish I had teachers like him!
If only you had a snatch block in HS.
Thanks for creating this video! I have never used them before but now I feel like I could. Would you explain the needed specs on the rope vs. the weight to be lifted? How do you calculate the weight limit rating of the pulley (I assume they have ratings) into the job as well?
I already knew about the power of pulleys, but this video explains it very well. New to off roading and in search of recovery gear.
Dustin... I just wanted you to know that I saved this video a year ago and have referred back to it often. This video is one of the finest examples of what makes your channel great. Entertaining, informative content that makes a person smile. You've really found you calling here and should be proud.
I totally agree with you Fred :)
I was genuinely surprised when his sponsor wasn't snatch block
Snatch block doesn't even need to buy sponsorships at this rate lol
But why he uses about 50 times the brand name snatch blocks from all the pulleys in the world. Just wondering...
I was just waiting for it to cut to Ron Popeil so he could tell me how many monthly payments it costs.
That’s exactly why i came to the comment section
SNATCH BLOCK!
Wow .. taken in by you , production , editing and direction . I have no interest at all in the pulleys but you had me hooked I now have a better understanding . Brilliant .
I have lost count of how many times I have watched this video over the past 3 years. I love it. I went to school for engineering so we studies this in our statics class. In an odd way, this is so much fun. In an interesting follow up to this video, how does it work if the load you are lifting is you? Say you are sitting on a board tied to a rope that goes up to a pull and the slack rope comes right back down to you. To lift yourself up, how much force to you need to apply? You are both pulling the rope down and pulling yourself up at the same time.
I love how the accent comes out more when you're talking to locals
He has a public video Register and a local Register
Alek Tokorov I don’t, it’s cringe
Haha I noticed that too. Not sure if it's just me, but I accidentally start to talk similar to the accent of people talking to me after a little bit.
@@PrimetimeNut I too was once an insecure fourteen year old who projected my insecurities onto the world around me as "cringe"
@@PrimetimeNut People naturally mimic those around them for different reasons. Don't hold it against them. In fact, if you can play it up genuinely, people like you.
“Any day you can use a snatch block is a good day”
I strive to be this optimistic about everything lmao.
Yeah I know. He's like, "Yay! I got my Jeep stuck. Where's my snatch block?"
Impressive video! As a wrecker operator in the Marines, commonly referred to as a "Glorified Tow Truck Driver," I've successfully navigated through some challenging situations by utilizing snatch blocks. Anyways, great content!
I knew an elderly veteran who specialised in tank recovery. He showed me some pictures of the rig they used to get tanks out of bogs and deep sand. It was just like the compound set up shown in the vid' , except doubled up and spread out over about a quarter acre, with multiple stakes to take the load, and a pair of enormous trucks to provide the traction.
There’s literally nobody else on earth that makes learning more fun than Destin. A true gift to the RUclips community.
SNATCH BLOCK!
Matt Baker he does make learning great , but you know less then .001% of the people on earth. So always keep your mind opened to new experiences ;)
David Jr 😏.... He goe'n learn ta'day
I was literally thinking like what's the purpose of schools when this is so much more fun and I still learned a lot.
vitali the purpose of school is training for lifelong employment for corporate entities... just sayin'
"These are like my favorite thing"
Laminar flow: am I a joke to you ?
Punches : am i joke to you?
His OTHER favorite thing.
A rope's flow around a pulley is laminar.
Thanks for making this video. I'm doing some logging and I can really use the snatch block in some situations.
The front tires on the jeep have seen better days 😂. Love your videos!!!!
RUclips video: talks with slight southern accent
Talking to another Alabaman: southern accent triples in strength.
He applied some snatch block to that accent
It works that way in many places. Southern Michigan has a general midwest accent. Then when you go back up to the upper peninsula, your accent gains about 5 power levels and graduates to Yooper.
@@2009dudeman it also changes when we visit Canada.
Thats because he had SNATCH BLOCKS to triple his southern accent.
I didn't notice till I read your comment.... being from South Ga it sounded the same to me 😁
Perfect timing. My Christmas shopping just got easier. Snatch Blocks for everyone. 👌🏼 😂
Can I be part of your family? I want one!
I have no idea how your video ended up in my feed....but I'm glad it did. You did an awesome job and I love your enthusiasm!
Pulleys are indeed amazing. They can do so much and they are everywhere doing fantastic jobs !!! The physic behind is also delightful to draw. I love drawing forces on pulleys.... Great video Dustin !!!! 👍
Destin talking to camera: let me explain how this works
Talking to others in Alabama: NA tha's a thing a beauty ma fren
The code-switching is amazing.
By the condition of those Jeep tires, I’m surprised you didn’t get stuck on the asphalt.
Underrated
Someone send Destin a gift card for jeep tires.
He might have, but he's got a SNATCH BLCOK!
Smoother tires would mean better grip on the asphalt. That's why race cars use slicks on dry tarmac.
@@zrora3094 It’s called humour. Look it up.
Thank you so much for recoding everything in such depth. I love this. Definitely earned my sub! Thanks again!
Thank you so much for the great physics, mechanical, engineering, force, load, work and duty with a brilliantly goofy attitude and physical visually instructive video brotha! 😁😎 So freaking straight forward, informative, useful and helpful! I definitely learned at least one thing and was reminded that I knew multiple pieces of information that I had forgotten 🤘
"Jeff is the kind of guy I wanna be when I grow up" Nice to hear sentences like this from a grown man with kids and a hugely successful RUclips channel.
... Who's an engineer...
That really overwhelmed me! Destin is so humble it's almost incredible!
Man, it's a pleasure to watch him!
“sir this is a library”
SNATCH BLOCK
If I had not seen this video I would have assumed it was just another name for a chastity belt .
@@joemag6032 this comment is so underrated.
@@arielerosa3204 , oh well, later "Astrobrant2" posted a similar comment, and got several thumbs-up, so at least a few people are familiar with that old slang term.
Hey I was working on a problem at my job and didn´t know how to use pulleys. Now I know, thanks to your video and I solved the problem. Thank you.
I just watched this video on Monday in class while learning about pulleys! :)
Kids: “More easy”
Dustin: “Easier”
Then 5 minutes later he’s gone full country boy on the side of a road.
Yup, he said "less pulleys" instead of _fewer pulleys_ at one point.
But we come here for science, not grammar. :)
@@FRN2013 Stannis disapproves
Also worth mentioning he corrected his children without being patronising at all; getting the meaning and implementing the correction in the next sentence. Super respectful and a great way of teaching
@@Hevlikn YT comment sections are usually such a cesspool, but Destin's attitude has led to such insightful and positive comments such as these!
Good parenting 101; don’t remonstrate, demonstrate.
"Yo dawg, here's your warship"
Lol! Best line ever
They line every second amendment enthusiast wants to hear
Thanks for the video! Best pulley explanation on the Internet!
Hey Destin! We used to make these at Omega Pacific where I laser etched some carabiners for you many years ago. I would've gladly sent you some of our pulleys for this! Still have some kicking around my house. Unfortunately Omega Pac closed their doors years ago and I moved on to other stuff. All the best.
Anyone else notice his accent change when he's talking to another Alabaman on the road vs talking to the camera?
Absolutely yo
Happens to me too, spent my childhood in NC and AL then moved out west. I don't have an accent anymore unless I'm with a coworker who spent his life in Louisiana, then my accent creeps back out lol
I live in Georgia and when I'm speaking to another hick I can lay the accent on pretty thick but if I'm speaking to someone professionally I'll clean it up and try to speak "properly" I just like being plain spoken though.
It’s called “situational alabamanism”
@@lanceanthony198 as an alabamian, can confirm
"Hey mane, you got a purdy snatch block."
How I imagine people who are just a little too into pulleys meet and become friends.
A block of snatches... 😅
I teach mechanical advantage for rescue teams and your video was right on the money. Great video!
When Jeff stopped to help and connected two snatch blocks, one was providing a 2x mechanical advantage and the other was providing no mechanical advantage. The snatch block attached to your friend Jeremy's truck provided a 2x mechanical advantage because the load (the truck) was attached to the pulley. The rope was attached at one end to a fixed object and you applied force to the other end (whether this force came directly from you or another pulley is irrelevant for determining the advantage provided by this snatch block). A pulley acts as a fulcrum with the rope taking the role of a lever. Because you are pulling one end of the rope across the full diameter of the pulley to a fixed object, the length of the fulcrum is equal to the diameter of the pulley. But because the load is pulling from the middle of the pulley to the fixed object, the fulcrum is one half of the diameter of the pulley. Therefore because your fulcrum is twice that of the load, you have a 2x mechanical advantage. This setup is called a floating pulley because the pulley moves relative to the fixed object. The snatch block attached to friendly passerby Jeff's truck, provided no mechanical advantage, but by providing the ability to change the direction of the applied force it provided a problem solving strategy advantage or convenience. Here, the load was attached to one end of the rope, the pulley (snatch block) was attached to the fixed object, and the force supplied by Jeff's truck was applied to the other end of the rope. Here, the force was applied (by Jeff''s truck) from one side of the pulley to the center of the pulley attached to the fixed object, so the fulcrum is one half of the diameter of the pulley. The load was applying its force to the other side of the pulley to the center of the pulley (attached to the fixed object), so its fulcrum is also one half of the diameter of the pulley. Since both load and force have the same length of fulcrum neither has an advantage. This setup is called a fixed pulley because the pulley remains stationary relative to the fixed object, and is used to redirect the forces without providing a mechanical advantage.
"Dad, am I your favourite?"
"No, son. This snatch block is my favourite"
"Then there's laminar flow, slow-mo cameras, dominoes, Prince Rupert's drops, eclipses and of course rockets. But I'm pretty sure you're on my Top 100... I guess."
Dad why's my sister's name Rose?
Because your mother loves roses
Thanks Dad
No problem Snatch Blocks
favorite*
@@andrewchristiansen8311 oh little child, no.
@@Ausblack You did it twice. Its your own fault.
favorite
[ˈfāv(ə)rət]
ADJECTIVE
preferred before all others of the same kind.
"their favorite Italian restaurant"
12:37
Destin : " "I wanna tell you something else that's amazing, and that is the sponsor for this video, which is.."
Me : "SNATCH BLOCK!!"
Destin : "Kiwi Co"
Me : "Um, okay.."
😂😂😂
Right?
I was also waiting for that. I was so dissappointed when he said Kiwi Co, coz I was about to say this whole sponsored snatch block ad is too much!
I was already to buy too! I was like "Yeah I can use a Snatch Block!
Who's kiwi co?"
5:00 You KNOW you're a physics nerd when you get THIS excited by pulleys...
LOL
Love you, Destin!
3:03 - Single Snatch Pulley
3:45 - Double Pulley
4:36 - Quadruple Pulley
9:36 - Quadruple Compound Pulley
When was the alabama part???
I love how the accent kicks in when you're out of the studio filming with the locals!
The practicality of this science both amazes and entertains me that makes it easy for me to re-watch this several times. It's just fantastic. thank you!
YOU deserve an Academy AWARD for great video, positive attitude, giving-back, great dad-and using Archimedes!!! AWESOME! Got here by Harbor freight 5500 winch for my Hummer H3. Thank you!!!
Destin, that was maybe my favorite sponsor ad I’ve ever seen. I wish more companies were open to interviews for their sponsorships.
Gym Bro: I lift 300 lbs, how much can you lift, bro?
Physics dude: SNATCH BLOCK! I can lift your whole house BRO.
"Give me a long enough lever, and I will move the world."
@@SkippertheBart Give me enough pulleys and I will lift the world.
@@wanderinwolf3804
If you just push the ground, you can already do that
@@wanderinwolf3804 a pulley is a lever
@@willsheehan2975 No a pulley is not a lever. a lever is a rig bar resting on a pivot point, called a fulcrum, used to lift heavy loads. A pulley is a grooved wheel which a cord passes through to change the direction of the force needed to lift heavy loads. Just because they are both used to lift heavy loads does not automatically make them the same thing, that is a false equivalency. Thats like saying a swimming pool and a lake are the same thing. They both hold water, they both can have living organisms live inside it, they both allow for swimming... So a swimming pool and a lake must be the same thing.
I absolutely love how your accent changes by whom you are around,and you are self aware of this incredible skill,thanks brother ❤️
Hi Justin. Love your channel!.
Little story bout leverage and simulated pulleys through knotted rope.
In 1988 I was working in a band and towed the box trailer round to our gigs containing our 1500 lbs of PA system. Long story short, the drummer owned the trailer and on one break we stood outside the venue at the cars where I said to Louie - you know what?, if I compounded the Truckies Hitch Knot on this rope to 2 and 3 knots in the same span, I could buckle your trailer. Louie said go for it. I tied the hitches together from one side of the trailer to the other side and pulled. Louie laughed at my attempt when a big CRUNK sound emanated from the sides. The trailer had crimped vertically along the sides approx centre of the way down its length. I apologised and offered to get him a new one but we bent it out and compensation went no further.
The reason I mentioned this is because I was fascinated that one rope can be levered so strongly. I tried 4 and 5 hitches in the one span but the nylon or hemp ropes would snap with just the smallest of force. I saw your vid a ways back and since have been wondering what it reminded me of. There you go. Take care M8.
Destin has the knowledge of an old person and curiosity like a child.
SNATCH BLOCK!
I like when he said "when I grow up". He will be young at heart forever.
R'mur yeah! That’s what I like about him so much.
Does anyone else have the impulse to buy a snatch block despite knowing you’ll never ever use it?
I thought so until today I wish I had one...
Yep, I got 5 or more, 2 are so nice I can't bring myself to use them, Keeping them new.
To be honest I’ll probably use it a lot
I have a lot of tree trunks to remove in the backyard. 200 pulleys would help
I suddenly have the impulse to create a pulley system that makes pedaling a bicycle in high gear much much easier.
I watch this every year to refresh myself on this now.
Most helpful video on youtube for a guy like me
0:03 "This are like my favorite things in the whole world"
* SAD LAMINAR FLOW NOISES *
😆😆 I feel Laminar Flow's pain
You beat me to it ;-;
U can clearly see the joy in his voice when he says
“SNATCH BLOCK” 😂😂 and i love it!
im gonna be saying it all day myself lol seriously though
I took at physics class two times one in hs and one in college and I don't think about this concept often so it's nice to revisit it. Whenever I try to essentially McGuiver something I come back to basic physics
just LOVE your show. your approach to science and physics is phenomenal, and you are an inspiration.
Destin, your section that included getting your Jeep stuck reminded me of a pair of tricks my father taught me about mechanical advantage. Neither use snatch blocks but both are useful if you have a length of chain or, in the case of being stuck a stout rope. Dad had taken a friend and I sledding (and wood hauling...), this is about 1966-7. He drove the old 4x4 out into a flat field that had 8" of powder snow and we set off to buck some birch and do some sledding. Upon our return, we discovered that under all 4 wheels of the truck there was a thick layer of solid ice. Even trying to ease the truck into motion wasn't happening, all 4 wheels were spinning as if the truck was on a hoist. Dad pulls out a length of 1" rope, tied it to the frame (separate lesson on a bowline knot) and instructed me to proceed with the other and to an anchor tree, put a wrap around it and pull it as tight as possible. He got in the truck and instructed my friend to push on the rope at the center of the line between truck & tree at right angles to the line. My buddy was able to push the rope 2-3 feet moving the truck just an inch or two. Dad applied the brakes, my buddy let up on the pressure & I took up the slack at the wrap at the tree. Rinse & repeat until we'd moved the truck a few feet where there was a little traction and we were free. This is the power of trigonometry! The force applied was my 50-60 lb. buddy on an icy surface to the rope, but the force applied (at first) to the truck was perhaps 30 lbs. / sin(~179.9999 degrees) or bunches (>100,000 lbs.)! As the angle drops from ~180, the force drops rapidly too, but a hundred foot rope keeps a high angle to this point for several feet. The other mech advantage trick was using a length of stout chain (35-40 lbs. 10') bolted to a stubborn axel in an old tractor needing removal. Using the mass and momentum of the chain to yank that axel in a couple of tries. I don't miss the cold and snow of Montana, but I do recall lessons well received... :)
aw, awesome trick. p.s. I don't think the force reached 100,000 lbs, any rope has a bit of a give in its length, so when it finally extends to its full length the angle is already less than 180
@@vsm1456 Good catch! Being an electronics guy, I recalled the reason for the 'sag' of power lines between power poles and gravity pulling down on those lines removing any possibility of hitting 180 degrees (straight and flat) ... Because... infinity. I used the 'theoretical maximum' of it being near dead straight just for the calculation, dramatic effect and to show how strong I was as a strapping 8-year-old pulling the rope tight... :) The initial force on the truck (and the tree) was likely on the order of an average of 1000-2000 lbs. for an inch or two, but the point is made... it works well.
After watching this video I was able to construct a pulley system with a 1300 watt winch and 6 snatch blocks that could pull medium size oak stumps out of the ground while preparing for a house build. Insanely satisfying to see the science work in real life. Thanks for this video. It saved me a lot of time and back ace.
I'm a year late to this question, but I'm less impressed with the pulley's as I am with *what they were attached to*. Was it the hand of God?
@@EarendilStar He had a 30 ton digger standing around which provided him with a handy Archimedean point.
Figuring out the best way to pull stumps is exactly why i clicked on this video.
How much do I love this video? I've spent a lot of time in Alabama (even though I'm from Australia) and I love the South because everyone is so friendly... especially the old timers. So when that good ol' boy (meant in the nicest sense of the phrase) drives up and sees you in trouble, he not only offers to help... he understands HOW to help! I fear this sort of attitude and this sort of 'common' sense is being lost on our youth. I also love the fact you went to a real library! This video taught so many lessons. Keep 'em coming!
What a fantastic video. Teaching combined with entertainment has such a lasting learning effect on young and older minds alike. You have also found the PERFECT sponsor for your channel with KiwiCo as well. Greetings from Ontario, Canada.
i like how destin dials up his alabama accent when talking to jeff
Being from Tennessee but living in San Diego I do the same thing when I’m back home and I INSTANTLY noticed that.
his alabama accent went from 0 to 100 FAST
I came in here to say this.
That can happen subconsciously. I've noticed that I tend to reflect the accent of people I'm around if I'm around them for prolonged periods of time - even if I'm still living in the same place as I was before I started reflecting the accent.
My dad does the same. I dont have an accent. and he doesn't when he talks to me other people generally. until he talks to his family he reverts to a pretty hefty accent.