Self-correcting Inverted Pendulum Defies Gravity

Ғылым және технология

In this video I show you how an inverted pendulum works. The physics behind the gravity defying pendulums requires complex equations, but has a simple explanation.
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*Any experiment you try is at YOUR OWN RISK. The Action Lab assumes no responsibility for any injury if you attempt anything you see in this video or on The Action Lab channel.

Пікірлер: 611

  • @Aledharris
    @Aledharris3 жыл бұрын

    Love that he’s wearing the gloves while his wife is pushing the saw blades with a wooden stick! xD

  • @MrEazyE357

    @MrEazyE357

    3 жыл бұрын

    They're not saw blades.

  • @rainbowsixsiegeandgta2401

    @rainbowsixsiegeandgta2401

    3 жыл бұрын

    @@MrEazyE357 yes

  • @williamsauls2648

    @williamsauls2648

    3 жыл бұрын

    Clipboard guy

  • @rbad6215

    @rbad6215

    3 жыл бұрын

    shes the safer one. NEVER wear gloves when using power tools. NEVER.

  • @windowsxpmemesandstufflol

    @windowsxpmemesandstufflol

    3 жыл бұрын

    Or is she?

  • @quahntasy
    @quahntasy3 жыл бұрын

    *Wish we had a science teacher like him, when we were in School*

  • @jesussavescars807

    @jesussavescars807

    3 жыл бұрын

    We do he’s here now in the new age of school watch and learn

  • @Maxim.Teleguz

    @Maxim.Teleguz

    3 жыл бұрын

    *The reason we are watching now is because of the dumb teachers we had.*

  • @JuanReina08

    @JuanReina08

    3 жыл бұрын

    @@Maxim.Teleguz imagine being able to properly convey an idea, while in the process also teach? Sounds like a gift and unique ability. Don't be so harsh on your teachers.

  • @girlsdrinkfeck

    @girlsdrinkfeck

    3 жыл бұрын

    @@Maxim.Teleguz u wouldn't know English to comment such dumbness if it wasn't for your teachers

  • @nickx1041

    @nickx1041

    3 жыл бұрын

    When were still in school oof

  • @OrigiZ
    @OrigiZ3 жыл бұрын

    3:36 - when I'm in the mood, but she's not.

  • @PozieNayan

    @PozieNayan

    3 жыл бұрын

    Me: 😚 But my wife...

  • @maciejp7829
    @maciejp78293 жыл бұрын

    *Mom walks in on me - Mom that's not what you think! I'm just jiggling my pendulum!

  • @luke3491

    @luke3491

    3 жыл бұрын

    Coom

  • @oranges1758

    @oranges1758

    3 жыл бұрын

    XD

  • @zjz1

    @zjz1

    3 жыл бұрын

    See? It stays up

  • @spyrgelispyy

    @spyrgelispyy

    3 жыл бұрын

    @@zjz1 you made it even better 😂

  • @_oracle

    @_oracle

    3 жыл бұрын

    But don't read my name

  • @analogdistortion
    @analogdistortion3 жыл бұрын

    3:40 - Their typical foreplay.

  • @Javierjr1224

    @Javierjr1224

    3 жыл бұрын

    🤣

  • @EagleJet420

    @EagleJet420

    3 жыл бұрын

    💀

  • @devonchristopher5837
    @devonchristopher58373 жыл бұрын

    I. WANT. THIS. GUY. TO. BE. MY. TEACHER. Correction : WE.

  • @akashgawai7174

    @akashgawai7174

    3 жыл бұрын

    Absolutely

  • @tomasgomes8793

    @tomasgomes8793

    3 жыл бұрын

    If he were your teacher, he'd be teaching you the same lame shit you learn already, it wouldn't be any different. You'd be learning the equations behind this, not the theory. But sure, I get what you're saying.

  • @MohitKumar-ui4tg

    @MohitKumar-ui4tg

    3 жыл бұрын

    @@tomasgomes8793 😂😂😂

  • @kingofmonsters7452

    @kingofmonsters7452

    3 жыл бұрын

    He is , Just difference is he is teaching on YT and to Millions of Peoples

  • @StemLG

    @StemLG

    3 жыл бұрын

    @@tomasgomes8793 100%

  • @ArieteArmsRAMLITE
    @ArieteArmsRAMLITE3 жыл бұрын

    3:30 Cannot believe you recreated me and my wife's love life on your channel. Thank you. I cried.

  • @BigfootWithMemes
    @BigfootWithMemes3 жыл бұрын

    In a parallel universe, gravity defies self correcting pendulums

  • @kingofmonsters7452

    @kingofmonsters7452

    3 жыл бұрын

    Imagine you pooping upside down and your poop goes in space

  • @internetuser8922
    @internetuser89223 жыл бұрын

    "Worst job ever" - She's doing the worst job ever, or she's been assigned the worst job ever, lol?

  • @sutapadey5274

    @sutapadey5274

    3 жыл бұрын

    03:33

  • @rakshithavb7108

    @rakshithavb7108

    3 жыл бұрын

    He's saying about the pipeline just above his wife's head that he worked on

  • @markkestner6514

    @markkestner6514

    3 жыл бұрын

    He’s saying she was assigned the worst job.... lol

  • @_oracle

    @_oracle

    3 жыл бұрын

    Don't read my name

  • @Alto_C

    @Alto_C

    3 жыл бұрын

    both

  • @lakrumallawa6454
    @lakrumallawa64543 жыл бұрын

    03:30 Me and the neighbors kid playing together.

  • @EvanReichert

    @EvanReichert

    3 жыл бұрын

    Playing with each others pendulums?

  • @lakrumallawa6454

    @lakrumallawa6454

    3 жыл бұрын

    @@EvanReichert ah yes. A cultured reply.

  • @glitchdinvr4248

    @glitchdinvr4248

    3 жыл бұрын

    @@EvanReichert I-

  • @rahulsinha12043
    @rahulsinha120433 жыл бұрын

    Gravity: This Pendulum is going to end my whole career 😂😂

  • @jamesbizs

    @jamesbizs

    3 жыл бұрын

    👎🏻

  • @Narayan

    @Narayan

    3 жыл бұрын

    Without gravity we wouldn't even be here playing with pendulum, who is the winner? Of course gravity 👑😂

  • @rahulsinha12043

    @rahulsinha12043

    3 жыл бұрын

    @@Narayan LMAO 😂😂😂

  • @Zeldaschampion
    @Zeldaschampion3 жыл бұрын

    5:04 That poor woman, she knew the jank was coming and it did.

  • @Mikidy303
    @Mikidy3033 жыл бұрын

    Finally! A good use for a Ryobi reciprocating saw. I'm sure the motor will still burn out shortly

  • @GlitchedBlox
    @GlitchedBlox3 жыл бұрын

    5:04 HERE'S JOHNNY!

  • @rijin9460

    @rijin9460

    3 жыл бұрын

    🤣🤣🤣

  • @warchiefgaming4690
    @warchiefgaming46903 жыл бұрын

    I want to see you and your wife doing experiment together... It's really good video btw❤️

  • @avoirdupois1
    @avoirdupois13 жыл бұрын

    This episode was action packed. Love the expressions of your assistant!

  • @SteveFrenchWoodNStuff
    @SteveFrenchWoodNStuff3 жыл бұрын

    The double pendulum glow paint (?) part at 4:32, combined with the music he switched to, made for a really cool segment.

  • @miomimomiro
    @miomimomiro3 жыл бұрын

    Dude. I love you. This is just great. Also opening eyes through experiments like this gives me (a boring 30 yr old thinking these things all the time and now understanding way too late why I wondered what made me like certain teachers and some not. The creative ones who always put in a twist that blew our minds were without a doubt the ones most kids enjoyed and why most of my school liked chemistry. The teacher made miniexplosions and showed us a lot of experiments so that stuck with us. And through these creative ways of showing science I personally believe is the way to enhance the curiosity to push science forwards and think outside the box to bring something we can use in the future. Something we can’t even imagine yet. P.S. To anyone reading this I want to say: Stay curious! Find what you love and keep at it. If you have trouble finding what you love - try to remember what you love doing as a kid and/or still do that brought you the most joy. If you want to turn it into a business to make a living out of it = check out what businesses are built around the thing you love and do that. And if you want it just as a hobby - just do it! You’ll start to see more happy moments in 6 months. I promise. ❤️

  • @marco_gallone
    @marco_gallone3 жыл бұрын

    This is one of the coolest videos you’ve released yet!

  • @jabhomemonitoring
    @jabhomemonitoring3 жыл бұрын

    Very nice. As always, short and sweet and to the point. Thumbs up. Thank you.

  • @avidinvestor9409
    @avidinvestor94093 жыл бұрын

    Ever notice how he starts his videos with “Today we’re going to...” Lol, cracks me up 😆

  • @rockinrobin9093

    @rockinrobin9093

    3 жыл бұрын

    Hey everyone! Today we’re going to...

  • @jackroom1261
    @jackroom12613 жыл бұрын

    At 3:00 has anyone else noticed yes the pendulum is inverted.... but he’s basically became the pendulum? And also shoulda probably covered isochronism in this video since it’s on pendulums

  • @grandunification6226
    @grandunification62263 жыл бұрын

    Amazing video , loved the simple saw idea

  • @navrag4927
    @navrag49273 жыл бұрын

    I did all these in my childhood.....still didn't know there was science even behind this😂

  • @mayar9928

    @mayar9928

    3 жыл бұрын

    is there anything without science behind it?

  • @jamesbizs

    @jamesbizs

    3 жыл бұрын

    Lol compared to what else behind being things?

  • @thelittlebrat6418

    @thelittlebrat6418

    3 жыл бұрын

    Sames

  • @imm2mthankgod616

    @imm2mthankgod616

    3 жыл бұрын

    I can see a couple of kids playing with a reciprocating saw with a blade attached to another blade in the garage video games would become obsolete

  • @custos3249

    @custos3249

    3 жыл бұрын

    @@mayar9928 Homeopathy, psychics, dousing rods, "alternative" conclusions from various forms of science denial, etc. Granted, you could argue psychology is relevant to understanding their perpetuation, but, evidently, psychology isn't a science. Which is a good thing so we don't have to worry about the Dunning-Kruger Effect and falling into one of the above items.

  • @mar8925
    @mar89253 жыл бұрын

    My first thought was to shift the center of mass to the short end of the pendulum. That way, the long side goes up. The torque Idea is cool and fun, however it does require constant energy input. Alongside with other disadvantages like noise. This is a good introduction to torque. The background music is at an appropriate volume. Overall the video quality is great. Thank you very much for this video. Hope you keep posting more.

  • @catkeys6911
    @catkeys69113 жыл бұрын

    Interesting battle between gravity and inertia. I had a really great physics teacher in my senior h.s. class, and this guy reminds me of him. Mr. Rosenblum had a more laid-back personality, but he was very good with physical demonstrations that helped us students to understand some of the principles and forces in physics while also making it more fun.

  • @davidcovington901
    @davidcovington9013 жыл бұрын

    As usual, this channel does basic but surprising physics things I've seen nowhere else. Show people the scene at 3:45, ask them to figure out what is going on. At 4:00 seems like a good sword invention. Somehow.

  • @kingofmonsters7452
    @kingofmonsters74523 жыл бұрын

    Everyone is gangsta until Triple Pendulum walks in

  • @aayush1091
    @aayush10913 жыл бұрын

    4:33 holy crap, that's so amazing😮😎😎 It looks so cool with that uv light charging that glow in dark background😍😎😘

  • @mundymorningreport3137
    @mundymorningreport31373 жыл бұрын

    I think you have the inspiration for an amusement park ride with that double pendulum or even just the inverted one. Nicely done.

  • @chinmay1682
    @chinmay16823 жыл бұрын

    Woaw what a best video ever seen. I haven't even thought about this. Nice video

  • @baptistebauer99
    @baptistebauer993 жыл бұрын

    Derived the equations of motion for the inverted pendulum on a vibrating pivot for my Classical Mechanics class. You can find it in Laudau's Course in Theoretical Physics Series, Volume 1, Mechanics.

  • @analkalinne
    @analkalinne3 жыл бұрын

    5:04 I'm confused... Was this a face of fear or enjoyment ?

  • @somecsguy9824

    @somecsguy9824

    3 жыл бұрын

    Yes. 😂

  • @maxwellsequation4887

    @maxwellsequation4887

    3 жыл бұрын

    Fenjoyement

  • @igxniisan6996
    @igxniisan69963 жыл бұрын

    3:34, 😳 *Worst job ever?* Oh no.. my mind just thought of _something else..._

  • @UDX6T

    @UDX6T

    3 жыл бұрын

    Worst job ever was done by whoever wrote your name

  • @igxniisan6996

    @igxniisan6996

    3 жыл бұрын

    @@UDX6T same to you ❤️

  • @UDX6T

    @UDX6T

    3 жыл бұрын

    @@igxniisan6996 Well my name (in Bengali) literally means "Festival Giver". Your name however is like a 1 year old drew something while pooping.

  • @Millenniumgameryatharth

    @Millenniumgameryatharth

    3 жыл бұрын

    @@UDX6T lol 😂

  • @hatmanpat1211
    @hatmanpat12113 жыл бұрын

    I love how the music matches perfectly with it 4:33

  • @anaphylastiks
    @anaphylastiks3 жыл бұрын

    Your videos have helped me apply physics and math to building tools. Thanks.

  • @UnbelievablyGauche
    @UnbelievablyGauche3 жыл бұрын

    Please drop a sheet of paper in a vacuum. Vertically and horizontally. It would be so satisfying to watch it fall straight down, without a flutter. But horizontally, would it bow in the middle???

  • @UnbelievablyGauche

    @UnbelievablyGauche

    3 жыл бұрын

    @@Belowtheroots so gravity is pulling equally on it at the centre as at the corners?

  • @jamesbizs

    @jamesbizs

    3 жыл бұрын

    @@UnbelievablyGauche ugh, yeah? Why wouldn’t it be?

  • @UnbelievablyGauche

    @UnbelievablyGauche

    3 жыл бұрын

    @@jamesbizs isn’t there more weight in the centre? I knew that was a stupid question when I asked it. Edit: if you imagine 4 people holding a blanket at the corners, it would dip in the centre. That's my thinking.

  • @jpe1

    @jpe1

    3 жыл бұрын

    Even better: make a small parachute with a weight at the end of the shroud lines and hold it “upside down” (weight at the top, parachute dangling below) and release that in a vacuum. It should fall with the parachute part remaining at the bottom and the weight up top.

  • @somecsguy9824

    @somecsguy9824

    3 жыл бұрын

    @@UnbelievablyGauche Remember that acceleration is not dependent on weight (or, more correctly, mass). That's the whole point of the experiment of dropping something in a vacuum that is normally highly affected by air resistance (like a piece of paper or a feather).

  • @adityakrishna4101
    @adityakrishna41013 жыл бұрын

    Science does work! And that needs to be shown along with concept in classrooms... Nice content!

  • @nakulankurmullam2982
    @nakulankurmullam29823 жыл бұрын

    Tbh when i saw this on steve moulds channel something didn't quite click but when i saw ur video its was really clear

  • @sossiepie2243
    @sossiepie22432 жыл бұрын

    4:33 the pendulum isn't chaotic at all, it's just perfectly musical!!

  • @nealsonf
    @nealsonf3 жыл бұрын

    Very cool!!! Learn something new once again! Thank you so much!! Much GRATITUDE and Love!

  • @Sfo97
    @Sfo973 жыл бұрын

    Such a simple concept, that was very cool

  • @fmusicede7384
    @fmusicede73842 жыл бұрын

    Loved it! thanks man!

  • @rekhapc9899
    @rekhapc98993 жыл бұрын

    He:Inverted pendulum Me:Inverted bullet

  • @AliShuktu

    @AliShuktu

    3 жыл бұрын

    Kids detected! CALL NSA!

  • @bhavyajain638
    @bhavyajain6383 жыл бұрын

    This is the best science channel. I wonder how he thinks about these wonderful topics. They are always unique and mind blowing.

  • @bruh-21
    @bruh-213 жыл бұрын

    Dude this is prob the coolest thing i've ever seen involving pendulums

  • @Sunitabishtsona
    @Sunitabishtsona3 жыл бұрын

    Explaining very effectively 👍

  • @egadzooks
    @egadzooks3 жыл бұрын

    This was truly mind blowing. I think I'll need to do some free body force diagrams to understand this effect

  • @Sunitabishtsona
    @Sunitabishtsona3 жыл бұрын

    Excellent and valuable information for students

  • @wargreymon2024
    @wargreymon20249 ай бұрын

    This deserves more views

  • @armageddon199
    @armageddon1993 жыл бұрын

    Up it goes, up up and away!!

  • @dijasom
    @dijasom3 жыл бұрын

    I like the way you solved this. Reciprocating saw was best wae.

  • @CarterSharer
    @CarterSharer3 жыл бұрын

    Wow this is super fascinating 🧐

  • @strangeclouds7

    @strangeclouds7

    3 жыл бұрын

    Hey

  • @FlyingNoodle554

    @FlyingNoodle554

    3 жыл бұрын

    LOL

  • @kleeonn

    @kleeonn

    3 жыл бұрын

    @@whaledog7036 Ikr

  • @trollloloololooo

    @trollloloololooo

    3 жыл бұрын

    @@whaledog7036 8 mil and I never heard of him

  • @THESLlCK

    @THESLlCK

    3 жыл бұрын

    bot comment

  • @NoGufff
    @NoGufff3 жыл бұрын

    Very brave of you, Mrs Action Lab.

  • @mateomatta2381
    @mateomatta23813 жыл бұрын

    Her reaction is so sweet haha. Funny and impressive experiment!

  • @michaelcombrink8165
    @michaelcombrink81653 жыл бұрын

    This was cool! Didn't think it would work for multiple lengths/weights/frequencies, I thought it would have to be perfectly timed,

  • @MarkMellors
    @MarkMellors3 жыл бұрын

    This also works for continuously flexible assemblies, like bike brake cable outers, net curtain wire and some stuff ropes

  • @user-ez3iv6ji5c
    @user-ez3iv6ji5c3 жыл бұрын

    This is the only channel that makes physics, a course I’ve chosen to replace with ap bio, interesting. I’m aware this is a superficial depiction of this topic that lacks in the equations/concepts associated with it; but, I guess this is what you have to do to hook our short attention spans.

  • @h7opolo
    @h7opolo3 жыл бұрын

    i would suggest modulating the speed of the sawzall power tool with regard to the periodicity of the pendulum for most efficient torque.

  • @AZ-wg3eg
    @AZ-wg3eg3 жыл бұрын

    Now we just jiggle a spacecraft, apply some assisted lift and we have a hybrid gravity propulsion vehicle HGPV. With the control center suspended by rubber band material to obsorb the shaking.

  • @lakshmikanthyada1688
    @lakshmikanthyada16883 жыл бұрын

    Very good example

  • @fishnmaster421
    @fishnmaster4213 жыл бұрын

    This is cool. I never knew this reaction would happen

  • @Joe_for_real
    @Joe_for_real2 жыл бұрын

    I think that Mrs. The Action Lab deserves a little more recognition in this video.

  • @vinaykumar6499
    @vinaykumar64993 жыл бұрын

    Excellent

  • @brendanbush2174
    @brendanbush21743 жыл бұрын

    At 1:50 I can see the gears turning on what his hands are supposed to be doing, but he nailed it. My brain would just shut down and get the movements 100% wrong

  • @lakshmisaienterprise9002
    @lakshmisaienterprise90023 жыл бұрын

    Have to learn more from him very good things he is teaching intrested

  • @kunjappanck5342
    @kunjappanck53423 жыл бұрын

    Easiest upward pendulum : Take a pendulum. Take its stand and put alot of weight on it. Drop it from the sky. The upper stick first wiggles and then stays straight.

  • @Naiemaa
    @Naiemaa3 жыл бұрын

    The look on the lady’s face... 😂 Thank you both for the video 👍🏻

  • @01DOGG01
    @01DOGG013 жыл бұрын

    Thanks, I've wanted someone to do this for a long time. I once saw a bunch of straight rods connected by ball joints. Of course the thing collapses in on itself, but it stood upright once they vibrated it. You only have 1 joint but it's still the same principle. I actually asked you to do this ages ago but you can't read all the comments naturally.

  • @srinjoy2003
    @srinjoy20033 жыл бұрын

    Loved it!

  • @deepanshu9111
    @deepanshu91113 жыл бұрын

    Unbelievable experiments..mind blowing experiments Full support from #india...✌✌✌

  • @lakshmisaienterprise9002
    @lakshmisaienterprise90023 жыл бұрын

    Good information

  • @brighton2862
    @brighton28623 жыл бұрын

    could you do this with more segment to make a no gravity worm?

  • @todaytrendings3547
    @todaytrendings35473 жыл бұрын

    Simply superb 🤠 🙂

  • @harshbandodkar5833
    @harshbandodkar58333 жыл бұрын

    Make a video on quantum computing

  • @ShreddinSleds
    @ShreddinSleds3 жыл бұрын

    I bet whenever we figure out anti gravity technology we’re going to look back to videos like this and say “dude we were so friggin close!”

  • @davidprock904
    @davidprock9043 жыл бұрын

    5:03 No sharp blades were harmed in the making of this video.

  • @immuhere6877
    @immuhere68773 жыл бұрын

    What a great idea 👍👍👍❤️

  • @m.parikshith247
    @m.parikshith2473 жыл бұрын

    u r simply amazing bro...

  • @Sunitabishtsona
    @Sunitabishtsona3 жыл бұрын

    Very interesting topic

  • @JohnDlugosz
    @JohnDlugosz3 жыл бұрын

    You should link the other popular channels that covered this. I think it was Numberphile that had a guest interview explain the math behind it.

  • @coderanger7708
    @coderanger77083 жыл бұрын

    We are gonna make an Inverted pendulum. *TENET BGM STARTS PLAYING GNIYALP STRATS MGB TENET*

  • @JohnDlugosz

    @JohnDlugosz

    3 жыл бұрын

    huh?

  • @coderanger7708

    @coderanger7708

    3 жыл бұрын

    @@JohnDlugosz did you not watch tenet

  • @hanleypc
    @hanleypc3 жыл бұрын

    This really made me think! If you do this with a grandfather clock can you travel back in time?

  • @Elan_Altair
    @Elan_Altair3 жыл бұрын

    This is so awesome 😄😁

  • @dale1956ties
    @dale1956ties3 жыл бұрын

    4:28 reminds me of the way a Tilt-a-Whirl works.

  • @rupeshkumarkushwaha5213
    @rupeshkumarkushwaha52133 жыл бұрын

    Now I know why the pivot point was oscillating harmonically in the inverted pendulum lagrangian problem.

  • @GarretKrampe
    @GarretKrampe3 жыл бұрын

    You are a crazy bugger . I love it !

  • @NicoSmets
    @NicoSmets3 жыл бұрын

    Wow, that's surprising and amazing.

  • @qpSubZeroqp
    @qpSubZeroqp3 жыл бұрын

    When a pendulum is a better raver than you 😂 4:33

  • @Cyber_Cowboy
    @Cyber_Cowboy3 жыл бұрын

    0:10 "ladies"

  • @user-jt6ej7vh2p
    @user-jt6ej7vh2p3 жыл бұрын

    3:34 lol

  • @ashryashukla8354
    @ashryashukla83543 жыл бұрын

    Bro, but you can do this simply by using a bar/pendulum in which mass is non-uniformly distributed {i.e. center of mass should be at the side of bar from pivot point} ..... Then also stable equilized position would be towards upright.... By the way very nice video bro. Love from India....

  • @kritazya4571
    @kritazya45713 жыл бұрын

    I love your new concepts!! Love from Nepal.. Cheers Ok guys let's try one question. Suppose I have an ice floating in a beaker . But inside that ice there is an iron nail . So after melting that ice will the level of water in beaker. a) increases b) decreases c) remains same. Let's try this one.

  • @manaschintawar1173

    @manaschintawar1173

    3 жыл бұрын

    Ha bhai ye youtuber bahut acccha hai i am from india

  • @arpitpandey299

    @arpitpandey299

    3 жыл бұрын

    C

  • @devonchristopher5837

    @devonchristopher5837

    3 жыл бұрын

    @@manaschintawar1173 remains same, water level stays the same even with ice

  • @manaschintawar1173

    @manaschintawar1173

    3 жыл бұрын

    @@devonchristopher5837 ????

  • @jamesbizs

    @jamesbizs

    3 жыл бұрын

    Lol you really would have to know almost zero about science, to think a nail changes anything about this. This is literally elementary school science.

  • @nipendrasingh2707
    @nipendrasingh27073 жыл бұрын

    Very nice video

  • @ecneicsPhD4554
    @ecneicsPhD45543 жыл бұрын

    The look of horror towards the end in your friend's face...XD

  • @zippythinginvention
    @zippythinginvention3 жыл бұрын

    Wow! I wonder what other interesting applications this might have? Lightsaber?

  • @xdragon2k
    @xdragon2k3 жыл бұрын

    5:03 The face that accurately describe why to not do this at home.

  • @Jkauppa
    @Jkauppa3 жыл бұрын

    you could also insert something really heavy, inside, below the pivot axis

  • @Jkauppa

    @Jkauppa

    3 жыл бұрын

    you just invented a self-erecting sword-saw

  • @stephenorona2253
    @stephenorona22533 жыл бұрын

    Kinda reminds me of trying to balance long stick on your tip of your finger ,as it sways back and forth .

  • @manishthakur3638
    @manishthakur36383 жыл бұрын

    Very good

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