This Square Can Roll Like a Ball

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In this video I show you some interestingly weird shapes that seem like they shouldn't roll, but somehow they do. I talk about this science and physics of rolling and what causes something to roll vs slide. I talk about slip vs non-slip conditions of rolling.
Where to buy: You can search "Flipo Flip" on Google to purchase this. There are some on Ebay, Alibaba and Amazon and a company on Kickstarter is selling them as well!
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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.

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29 авг 2020

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Комментарии : 1 тыс.

@TheActionLab 3 года назад

A lot of people are asking where to by them. You can search "Flipo Flip" on Google and there are some cheap ones on Ebay, AliExpress, Alibaba and a company on Kickstarter is selling them as well! Have fun flipping!

@kokinikiju 3 года назад

yes !

@lukmly013 3 года назад

AliExpress has more complicated name for it: Flipo Flip Desk Toy Rotating Pocket Toy Fidget Kinetic Spinner Birthday Xmas Gift Children Adult Stress Relief Toys Dropship

@michaelprimes2039 3 года назад

Got mine from flipoflip.shop I think that’s the main site

@paxhumana2015 3 года назад

@The Action Lab, are the realms of gravitational pull, magnets, electromagnetism, and friction all related?

@willisbestname1203 3 года назад

I would have liked this, but it had 69 likes... sorry man, can't mess that up.

@TheSecondVersion 3 года назад

3:31 - Bowling lanes are *oiled* most of the way leading up to the pins, but the last few meters at the end *aren't.* Skilled bowlers impart a spin on the ball so that it slides relatively straight down the lane, but then *changes direction* due to friction when it reaches the non-oiled portion just before the pins.

@vixterrawks4171 3 года назад

He’s obviously not a bowler (Lebowski)

@Grasfh 3 года назад

@@vixterrawks4171 foot was over the line

@FlyingBanana78 3 года назад

@@Grasfh I am the walrus

@virtualexplorer278 3 года назад

@Noob Destroyer no he is a noob destroyed by you

@FlyingBanana78 3 года назад

@Noob Destroyer I am the walrus. Coo coo ca choo

@sohopedeco 3 года назад

Squares be like: "They see me rolling, they hating."

@santtusammakko4254 3 года назад

xdd

@Alikaykillerfour4 3 года назад

Cringe overload

@valorantclutch729 3 года назад

Is this some kind of brawl stars reference.

@TheLeftyGamer0 3 года назад

Spd gaming yes but no

@Alikaykillerfour4 3 года назад

Spd gaming maybe you’re just playing way too much brawl stars to be able to differentiate between basically any other references, and a supercell game.

@greminboye 3 года назад

Square: rolls Circle: hey that’s my job

@tahahusain7328 3 года назад

Yeah

@ldrago2019 3 года назад

,😂

@DevPatel-tk5ny 3 года назад

Let me correct you *Sphere "Am I a joke to you?"😂

@greminboye 3 года назад

Dev Patel wooosh

@XariksBeatbox 3 года назад

Oh.... that’s.. clever.

@micix5580 3 года назад

1970: "We will have flying cars and AI robots doing our jobs" 2020: R O L L I N G S Q U A R E

@giovannac.1531 3 года назад

😂😂😂😂😂😂

@xplosive3 3 года назад

😂😂🤣😂😂🤣😂😂😂🤣😂🤣😂😂🤣🤣🤣🤣😂😂😅🤣😅🤣😂🤣😂🤣😂😂😂😅🤣😅🤣😅🤣😅🤣😅🤣😅🤣🤣😅🤣😅🤣😅🤣😅🤣😅🤣😅🤣😅🤣😅🤣😅😅🤣😅🤣😅🤣😅🤣😅🤣😅🤣😅🤣🤣😅🤣😅🤣😅🤣😅😅🤣😅🤣😅🤣😅🤣😅🤣😅🤣😅🤣🤣😅🤣😅😅🤣😅🤣😅🤣😅🤣😅🤣🤣😅😅😅😅😂🤣🤣🤣🤣🤣🤣🤣🤣😅🤣🤣😅🤣😅🤣😅🤣😅🤣😅🤣😅🤣😅🤣😅🤣😅🤣😅🤣😅🤣😅🤣😅😅🤣😅🤣😅😅🤣😅🤣😂😂🤣😅🤣😅🤣😅🤣😅🤣😅🤣😅🤣😅😅🤣😅🤣😅🤣😅🤣😂🤣🤣🤣😅🤣😅😅😅🤣😅🤣😅🤣😅🤣😅🤣🤣😅🤣😅🤣😅😅🤣😅🤣😅🤣😅🤣😅🤣😅🤣😅🤣😅🤣😅🤣😅🤣😅🤣😅🤣😅🤣😅😅🤣😅🤣😅🤣😅🤣😅🤣😅😅🤣😅🤣😅🤣🤣😅🤣😅😅🤣😅🤣😅🤣😅🤣😅🤣😅🤣😅😅🤣😅🤣🤣😅🤣😅🤣😅🤣😅🤣😅🤣😅🤣😅😅🤣 not funny

@brodyenli 3 года назад

S Q A R E

@Ho3n3r 3 года назад

That's sqary.

@yingxiawei821 3 года назад

*square

@mistersaur 3 года назад

Don't worry, this bug will be fixed in next Universe Timeline patch.

@AshanSanjula 3 года назад

😁

@sujataavulapati7414 3 года назад

I am a in a game ur all in a game to hehe

@vod7280 3 года назад

Yea but the devs are like valve and havent updated in a while

@unnecessarilyepic1107 3 года назад

@@vod7280 I hear that the new update will have something to do with the current pandemic event, something about that human nerf we've been waiting for.

@SnakePartyPL 3 года назад

@Unnecessarily Epic i got leaked information that this nerf will be not being able to be outside without mask for longer and there will be limited time for being outside

@sam_lvlcnrn1492 3 года назад

Circle: I can roll Square: I'm about to end this man's whole career

@DrYesorno 3 года назад

*Sphere

@shrekvin3457 3 года назад

Dr. Yesorno circle can roll too...

@_Cfocus 3 года назад

@@shrekvin3457 circle is 2D its only in the drawing we don't have 2D objects.

@shrekvin3457 3 года назад

@@_Cfocus well, if you cut the paper into a circular shape, it can still roll lol

@rewrittenbytes1616 3 года назад

CowGoesMoo that would be a cylinder, not a circle

@azhakabad4229 3 года назад

Imagine How cars will look like after upgrading with this wheels.

@ajithsb1853 3 года назад

Also the driving experience will be awesome 😜

@keiji1531 3 года назад

Someone did that anyway...

@Gabriel-se6tj 3 года назад

I don't think it will be good for someone's stomach like you are jumping every second at a speed so fast that you will become a shaking machine

@ajithsb1853 3 года назад

@@Gabriel-se6tj I just said the same thing sarcastically in my comments on the top.

@herohuntergarou69 3 года назад

Mr indian hacker has already done that check it

@ldrago2019 3 года назад

2020: Squares can roll!! 2021: Any shape can roll!!

@tahahusain7328 3 года назад

I Think That It's True

@unthinkable9096 3 года назад

😂😂

@AnandKumar-ym9yw 3 года назад

2022 we are rolling 😁😁

@anarcocapitalista3700 3 года назад

Go to see sphericon, it's similar to this.

@codyamerman146 3 года назад

Imagine if houses rolled

@planktonfun1 3 года назад

The guy who invented square wheels: "Well, well, well.. who's crazy now?!"

@Kittsuera 2 года назад

only issue is we have the square wheels attached at he wrong point. the need to be [] not [__]

@oni8337 2 года назад

suspension would be a whole nother problem

@w1nt494 3 года назад

"We'll have flying cars in the future" 2020: Walking shapes

@kalpanapatel2387 3 года назад

It is cup of tea for someone preparing for JEE advanced 😂

@siddhantkhanna3763 3 года назад

Isne toh pure rolling samjaya hai,😂😂😂😂

@evasanth1896 3 года назад

😂😂😂

@bugs9284 3 года назад

Thanks for the tea chap

@potatotomato2564 3 года назад

Clearing it is the task... you may prepare for ages though

@sandipanshekhar7146 3 года назад

Its a moment of inertia question

@guilherme6818 3 года назад

First thing that I thought when i read the title: "If it rolls like a sphere then it's not a square" lol

@robertweekes5783 3 года назад

You describe physics so well! Making it easy to understand. Keep up the good work 👍🏼

@ramanujan5624 3 года назад

You are my inspiration to become an engineer! Thanks man

@tahahusain7328 3 года назад

Yep, He Is A Very Good Explainer On How Things Work!!

@harshil6043 3 года назад

Typical jee aspirant

@sarthakjain1824 3 года назад

@@harshil6043 😆😆

@user-en5vj6vr2u 3 года назад

Rebellio619 lmao

@unthinkable9096 3 года назад

Ma'am or sir

@halicusnguyen8864 3 года назад

mom: we have spheres at home spheres at home:

@shwetachillal3780 3 года назад

Such videos are enough us enjoy therotical things we read, in a practical way.

@aneeshlol2015 3 года назад

1:38 “it rolls down the ramp and starts rolling “

@jamalsdurag599 3 года назад

You missed the cut

@stevenguevara3252 2 года назад

dude i love your channel so much, so glad I subscribed!

@businessguide6219 3 года назад

Reliable and humurous, the kind of resource I'm looking for!

@arianaviaolk8799 3 года назад

square: rolls ball: am i a joke to you?

@SolidMilk69 3 года назад

The 3 knowledgeable quotes: “It rolls down the ramp and starts rolling” “People die if they are killed” “No matter the mission, you’ll die if you die”

@akashsunil7464 3 года назад

I loved this video helps us to recover from all misconceptions people have about rotational motion

@georgebarbos6969 3 года назад

Circle : wait you can roll? Square : Always has been!

@g_ato1978 3 года назад

"You can" "Always has" Dude.

@georgebarbos6969 3 года назад

@@g_ato1978 what

@g_ato1978 3 года назад

@@georgebarbos6969 I don't think "Always has been" is the right response to "Wait you can roll"

@georgebarbos6969 3 года назад

@@g_ato1978 ik, but it's messing up the meme

@miruxa. 3 года назад

Square : I can rolling! Everyone : how? My dumb brain : why rick is still rolling?

@LeprechaunJackson 3 года назад

Why doesn’t your comment have more likes?

@wiknzs 3 года назад

i can rolling

@merrsheepmsp1094 3 года назад

Do you ever see a meme thats just makes you sigh because it's so dumb

@king-qk4oz 3 года назад

@@merrsheepmsp1094 No. This meme is brilliant

@mrkitty777 3 года назад

Tries Rick rolling once, it's fun. 😸

@EthanAllred1 3 года назад

Sweet vid man. *Put those wheels on a toy car!*

@charlies8538 3 года назад

you can’t. there’s no center to put an axle

@filgas0892 3 года назад

Charle S I think there is in the side

@charlies8538 3 года назад

pippo & co no, the center of it would move up and down constantly so the one way you can make it as a wheel is if you make some sort of axle that can also move up and down, which is super inefficient and complicated, and the reason circles are used for wheels is because there is a center that stays in a consistent y axis so you just need to have a bearing attached for it to be able to rotate. So no, there is no viable way to make them wheelse efficiently since there is no solid center.

@EthanAllred1 3 года назад

I know it would be inefficient. But interesting to see.

@eertikrux666 3 года назад

If it’s a real car, it will be a total nightmare to ride!

@syper4202 6 месяцев назад

Love your videos man so informative and interesting 😮

@blackbear92201 3 года назад

Great video - thanks for posting!

@ren6140 3 года назад

Me to my friend: Just roll with it My friend:

@Miyano_Shiho4869 3 года назад

Me when I'm supposed to be studying for my exam : interesting

@tahahusain7328 3 года назад

I Also Need That Shapes!! Very Good Video. Very Good Explanation

@thomashughes4859 3 года назад

1:40 - 1:47 - that red point on the ball traces the cycloid, my favourite shape of all time! Long live isochronism! 2:21 - 2: 35 - you will see bowling balls on oily lanes skid till they dig and curve in for a strike! (3:25 - Nice!) Great vid, Professor!!!

@abdulfatahsanni439 3 года назад

I just bought it at flipoflip.shop. Thanks Man

@Bullyrok 3 года назад

I came to the comments for the link lol, thanks

@abdulshaban4618 3 года назад

Damn bro. I spent the last 45 minutes trying to find a place to buy thanks a lot

@abdulfatahsanni439 3 года назад

Abdul Shaban 😂😂sorry man

@michaelprimes2039 3 года назад

Thanks

@triffid0hunter 3 года назад

I'm a little disappointed that you didn't go into how the friction at the leading corner controls rolling vs sliding - a non-round object must raise its centre of mass to roll, and the friction at the leading corner must be high enough to /lift/ it out of a sliding configuration for it to roll. Furthermore, flat objects don't preserve energy when rolling because a flat face meeting the flat surface imparts little to no torque (since kinetic energy vector intersects the center of mass), whereas a curved surface does impart torque which converts the linear kinetic energy into angular momentum. Your profiled squares roll because their profile is designed to provide a smooth conversion between linear kinetic momentum and angular momentum, whereas an object with flat faces will lose much of its momentum to sound and other losses with little ability to retain any of it.

@d1rty_band1t49 3 года назад

This is too big brain for me so like. Calm down you intellectual boio

@mynamevirtual6389 3 года назад

Well said, it was a nice channel but now looks really boring and without sense

@soybins6902 3 года назад

Someone is speaking the language of a gods

@alstonmiller212 3 года назад

NERD!!! Noice

@xXDEFIENCE2066Xx 2 года назад

Lol If there is one thing, I love about this channel. it's how he explains everything. lol I litterally just saw an ad on these things. And after a youtube search. Action lab, has a video on it. lol

@ankitnautiyal2568 3 года назад

Nice Rotational Mechanics class. Cheers👍

@shreyakakkar403 3 года назад

Woah! This is so interesting!

@nandakumarmunaganti2644 3 года назад

It took me 2-3 revisions to understand "Why the ball rolls"... Anyways the video is just awesome...

@akagrawal51 3 года назад

U get so interesting topic that i have never even herd before and so i get more topic to flex on my friends

@renzezekieldivida3014 3 года назад

When you show your mom a square that rolls and turns it into a lecture

@averageanon5504 3 года назад

Reminds me of those magnetic clatter toy. Also I need that for the pure joy.

@dat1pengu1n 3 года назад

@Sanjay sridhar lmao it does rhyme, toy - joy

@jessepatnaude5397 3 года назад

Where did you purchase these?

@elliotb8782 3 года назад

*a m a z o n* i think

@DIYTAYSEERworld 3 года назад

Explaining on a BAKING TRAY was awesome... LOVE the way you explain.. Hat's off to you.. Keep making amazing vedios for as.. Thank you

@bernardocarneiro2110 3 года назад

Thats pretty interesting, and i think you could as well have a similar video explaining why a sphere, in some cases, rotates having a space variatiob of pi*r instead of 2*pi*r

@dionyzbaan7588 3 года назад

Me: can i see the coments? RU-vid:nope

@user-js4sv7ku3p 3 года назад

what?

@Souvik_Dutta 3 года назад

@@user-js4sv7ku3p Its an upgraded version of commenting "First"

@user-js4sv7ku3p 3 года назад

@@Souvik_Dutta ohh i see, thx

@pushkargarg5558 3 года назад

How did you hurt yourself while sleeping Well Thats hard to explain I rolled off my bed

@cheatsheet3325 2 года назад

Takes me back to when I used to roll squares with the boys.

@dymytryruban4324 3 года назад

I would also like to point out that in vertical rolling squares, vector (from center mass) of gravitational force easily goes outside the base thereby contributing to fall. I mean that if an object is on flat surface, it has foundation which is in contact with this surface. If we draw a vector that, when extended, goes outside of this foundation, then the object is unstable. When rolling square is horizontal, it still has some rotational kinetic energy (mass-moment of inertia*angular velocity squared/2) allows it to overcome the gravity that tends to stabilize it.

@pufferfish2163 3 года назад

wait till this dude finds out about spheres the mans gonna lose his mind

@SaifHack 3 года назад

Does anybody remember the mokuru the little fidget stick it also rolls like that

@XariksBeatbox 3 года назад

Finally, I’ve found some use for the physics I’ve learnt

@jameshuckabee7677 3 года назад

No matter the topic, you never disappoint on delivering quality, informative content. Thank you sir.

@saranshvottery6507 3 года назад

Me: Opens RU-vid. RU-vid: Wanna see a square rolling? Me:why not

@aadityachaturvedi3937 3 года назад

Square and Hexagon(together): we can rollll too! Circle: Mai kya karun phir..job chod dun!

@tahahusain7328 3 года назад

Nice Joke. Are You An Indian??

@aadityachaturvedi3937 3 года назад

@@tahahusain7328bilkul bro

@tahahusain7328 3 года назад

@@aadityachaturvedi3937 I Am Also Indian

@aadityachaturvedi3937 3 года назад

Nice!😊

@aadityachaturvedi3937 3 года назад

@@tahahusain7328 do u watch his videos regularly

@phonkystuff6269 3 года назад

my man explaining gravity right here

@devendravyas7986 3 года назад

I want to see some old style practical u used to do with equipments

@PremKhunt 3 года назад

Square: rolls Circle: Am i JoKe tO yoU

@davr9724 3 года назад

"It doesn't look like these should be rolling" ? It looks like it was specifically designed to roll

@salcontrino 3 года назад

The music while it was rolling was on point 👌

@EXPLORADVEN 3 года назад

I have to watch this with sound... Very interesting and basic physics. 👍👍👍👌👌👌😀😀😃

@imdickbutt 3 года назад

*W-What about a triangle?!*

@StarWarsTherapy 3 года назад

He said “roll a square” hehe 🌿🚬☺️

@modestogeek7238 3 года назад

Very cool! Your videos are great!

@ekiin8 3 года назад

balls and squares where paid actors XD

@RavinderSingh-tn7zi 3 года назад

Hello everyone *This is Your Daily Dose Of Internet*

@hi-ey3hy 3 года назад

dang

@MichaelBattaglia 3 года назад

The action lab is on a roll!

@imagesbyraphael 2 года назад

Here's something that hasn't been covered extensively on RU-vid which would be right up your alley: Optical bonding / optical contact. There are clips online but you would have a lot more fun with the phenomenon and explain it a lot better than what existing videos would.

@KodiboiOfTheCentury81 3 года назад

Fact: every comment right now didn't watch the full video

@tahahusain7328 3 года назад

We can say that it's an awesome video by just seeing this for 1 minute

@KodiboiOfTheCentury81 3 года назад

@@tahahusain7328 yes

@xchara6996 3 года назад

I finished the vid just to comment this 💀

@trol_mans69 3 года назад

wat

@KodiboiOfTheCentury81 3 года назад

Is your brain destroyed? Yeah, same

@trol_mans69 3 года назад

@@KodiboiOfTheCentury81 mhm

@xpndblhero5170 3 года назад

4:20 - I don't think that's how a Lego would be able to roll, I see it as the rotational speed overcomes the gravity so the sides don't touch the surface but the corners do so it rolls smoother than usual.... You can see that whenever it doesn't bounce up after a few rotations then picks up speed.

@K4SHXF 3 года назад

Square After Rolling:I just wanna Rolly Rolly Rolly.....

@tomonkysinatree 2 года назад

The frictional force during rolling is also going to be proportional to the weight of the object. Think having them being made of aluminum/metal helps with the friction over a similarly smooth surface plastic and hollow item

@rosefindleyson 3 года назад

I like this RU-vid channel because it is very educational

@Grubbet 3 года назад

I keep seeing ads for this online. I was hoping to see a video of someone covering this.

@claud3105 3 года назад

Thank you for this information that I didnt need but this is still vool

@blueclragon 3 года назад

2021: rolling square 2029: *R O L L I N G T R I A N G L E*

@onechannoplaybokusueve5985 3 года назад

Please consider to add where you obtained the background music , and it's name . It's useful for projects explanation

@rafidyasar9225 3 года назад

He is the most nicest science guy on internet

@Orelaf84 3 года назад

That’s so fun! It would be fun if I could make one for myself.

@bradleyfitzik3603 3 года назад

If the square is flat it's much harder to roll. Those special rolling ones aren't flat. They have extended middles making them roll

@travp959 3 года назад

great channel, nice shirt. keep up the great work

@MammaOVlogs 3 года назад

wow l love it, very interesting and good to know! :)

@SiliconeButts 3 года назад

The music in your video is really nice, is that youtube music or did you get it from somewhere or someone?

@stevedoolan1540 3 года назад

That sound of it rolling slowed down at 0:39 is giving me goosebumps

@ElSanto0044 2 года назад

Thanks, now I know how to roll my squares!

@saqibmudabbar 3 года назад

And that is folks why I love science 😍

@Ar.Raghav 3 года назад

I interpret it in a different perception. The centre of gravity of that object keeps changing and so that point is pulled to the ground and thus it rolls. So those squares had a little bump on their centre, which made the shift of centre of gravity when pushed. So it keeps changing the centre of gravity for each rotation.

@tampazeke4587 2 года назад

It must be amazing to be able to study and full understand these things without it making your head hurt!

@thickmomson 3 года назад

Everybody gangsta till a sqare starts rolling

@Surya045_ 3 года назад

Teaching abt rolling motion superb

@flap7875 2 года назад

Qui est la grace à nozman ? x) les deux videos se complète ^^ super travail !

@HarlanHarvey76 3 года назад

Hey - should explain why the spinning ball reverses rotation when dropped straight down???

@genrevnarvaez1376 3 года назад

Someone just asked me what is that when I'm tired Me: it's just a ball in disguise

@dorkultra 3 года назад

I bought this at 2am one night after seeing on instagram, it took a month to arrive from china. i rolled it about 20 times and it's sat in a drawer since then.