MIT Physics Demo -- Bicycle Wheel Gyroscope

[AntoMelta]

Good, I like that you share this video suspended from one of end of its axie by a rope, and spun up by hand. The wheel's axle is then placed horizontally and the free end of the axle processes about the supported end., I wish success always

[willamricard]

Nice Video The wheel's axle is then placed horizontally and the free end of the axle processes about the supported end That You Share , So Very Nice Thanks You

[imegatrone]

I Really Like The Video A bicycle wheel is suspended from one of end of its axie by a rope, and spun up by hand From Your

[bundawartini]

Your Video The wheel's axle is then placed horizontally and the free end of the axle processes about the supported end.Is Very Useful Sharing

[pwnreza]

thats physics mothaphuka !!

[Marcuzzorox]

momentums. that's cool

[TSHNOFX]

i used to do stuff like this, then i took an arrow to the knee

[NeldaCarolkv681]

hihi ich bin total naja wie soll ich sagen reich

[himelim]

Science!

[sushruthsiva]

this is basically conservasion of angular momentum

torque of gravity makes it revolve

[tiffy352]

so much win

[DanFrederiksen]

but if the precession is blocked would it hang to one side?

[Sneezo13]

@wtfzeb One is not stupid for not understanding this. It`s not simple at all.

[MrBabyboy915]

thats fucken awesome

[briantw1]

Cool vid.

Just because it's MIT, I'm gonna say surely you know how to deinterlace?

[Kamodo1]

this reminds me of an experiment we used to do at uni, same thing only a person holds the wheel whilst sitting on an office chair and they slowly turn in circles from the momentum :)

[wtfzweb]

!ts funny because some people are to stupid to figure this one out.

[ShivanandPattanshett]

Could someone explain why the wheel shaft finally goes down as the wheel slows down due to friction? If the shaft goes down finally, it means gravitational torque is greater than resisting torque. How is resisting torque against gravity related to the rate of spinning?

[echo4joe1]

@ShivanandPattanshett My guess would be that perputual motion has not been invented yet. I would fall back on to my basic sciences for this question. Knetic and potential energy have the same value... True. Add friction... or loss and you must add another value into your formula. Heat, noise and gravity are the vampire your looking for. None of those will ever go away. I never went to MIT, but I have a sound unterstanding of science. Where are my millions of dollars?

[DancingSpiderman]

This scientits' project reminds me of when the Hooters girls sit on an upside-down barstool and rotate the stool like a CowGirl bwaahahaha

[xTwigsy]

Gyroscopic Inertia FTW!!!

[coolnamehere19]

what's god's number? i have a bug to report

[Brainbust100]

@coolnamehere19 I think God's playing yahtzee.

[masterpthebear]

@presbarkeep, I think I know who the 13 people holding the torches would be...

[AleksandrLawati]

WTF :O

[rand3mhero]

I've always loved this physics demo.

[justthatkinddaguy]

he's a witch!!!!

[dilton7]

physics stop trolling !!!

[Levitikai]

BECAUSE FUCK YOU PHYSICS, THAT'S WHY!

[DWolfTV]

DON'T YOU PUT THAT EVIL ON ME RICKY BOBBY

[Realjhad]

BURN IT

[bliszor]

WHAT IS THIS SORCERY

[Drifty254]

GOD DAMN FUCKING SCIENCE

[thehipponator]

WHAT WIZARDRY IS THIS?

[caspiandejavuAC]

are you a wizard?

[S3iF3]

FAKE ! everyone knows that wheels don´t exist

[Bleengreen]

and that's how motorcycles going fast can get so close to the ground without collapsing :3

[nothingtodo225]

what foul sorcery is this?!

[madeinchina262]

THE WITCH MUST BE BURNED

[milosQaX]

@madeinchina262 Why do witches burn? Because they are made of wood. Wood floats and ducks float hence if she weighs as much as a duck she's a witch. LOGIC!

[gregarious24]

I wanna dip my balls in it.

[hapt1K]

@gregarious24 who's gotta plate of somethin'?

[cointozz]

Praise the Lord for creating physical wonders like this. His work is amazing <3

[BornAgainEngineer]

what would happen if you rotated a magnetic liquid in a vortex?

[AnthonyMEMU]

FUCKING MAGNETS, HOW DO THEY WORK?

[Porkytool5]

take that science!!!

[GarciaDavid1979]

cant imagine what they go through to true that wheel

[NotAnUndercoverCop]

What is that demonry?

[mcgibs]

SORCERY!

[kirollos210993]

Why can't they use this for fans instead of having all these bases for them?

[TrollingAround]

@kirollos210993 - I think you have miss understood what is going on here

[dim5867]

ITS HURTING MIND!!!!! DX So When Going fast enough on a Two wheeled Vehicle, Left goes right and Right goes left?

[xandon24]

Is this why it is so easy to ride a bike?

[DicasdePilotagem]

Dear. I'm a motorcycle tips video's producer and I'm going to edit a video explaining about motorcycle turnings. Would you autorize me to use part of it's video to explain about gyroscopic effect? Credits will be done to MIT Tech TV. Thanks (see my non profit work into youtube.com/dicasdepilotagem)

[akst1991]

gyroscopic precession

[FriendlyFireYT]

If you kept the wheel spinning with some type of motor, would it then stay vertical? Or does it just dampen the effect of gravity and it would still eventually fall.

[SamuelSlowMotionTV]

how to we make this?

[barrettski189]

Lol wtf? i chose physics as a high level course, and imma have my graduation in 12 hours, and i dont know how that thing works?! :D

[remoraid7]

Ok to fully understand this phenomena, you'll have to understand newton's 1st law which is like the underlying principle behind the law of conservation of momentum.. An object will always stay in its current state of motion unless an external force is being applied to it.. When the bicycle wheel spins, the particles in the wheel are all moving in a certain orientation.. in order to change the orientation of this motion, a larger force must be applied.. Gravity does not suffice.. So it stays in

[presbarkeep]

Back in my day, you'd be burned at the stake for shit like this.

[DM3062]

@presbarkeep

lol, this is why I love the internet

some awesome wit

[abobjenkins]

@presbarkeep maybe in europe

[Mandragara]

@abobjenkins Don't forget that America had a witch thing too :)

[xshadowspherex]

@abobjenkins haha dont forget the good old MA salem witch trials. same state as MIT :P

[codeavatar5]

@presbarkeep how old are you? lol

[TheFramer38]

@presbarkeep Back in your day?!

How old are you 4,978 years old?

[brenoakiy]

@TheFramer38 wth

they used to do that in the middle ages

[ikkuj]

@brenoakiy

Shit, they used to do it a couple hundred years ago in America (Salem witches?)

[Kandimann]

@presbarkeep Not too different from nowadays being a scientist with the theory of the big bang. This law of physics by itself makes Pluto unexplainable without adding God into it.

[donnieduncanson]

@Kandimann or the Spaghetti Monster

[TheYacine3tm]

Shit ! This is black magic !

Call 911 !!

[hoegaardenzo]

you should put a strobe light on the wheel, then I will like this video

[yoyo200001]

Que cantidad de ignorantes los que se atreven a comentar sin tener un mínimo de conocimiento en física.

[MRGUTTY9090]

thats why i love the phisics

[optionsnone]

@optionsnone 2nd and third gyro's being ferro liquid filled tubes fixed at 90 degrees to each other. Liquid spinning via electro magnetism. First being a normal gyro.

[Neongem5]

no.



[XzThatsWhatSheSaidzX]

thumb up if you can see the clown in the back ground

[Dnizzle7]

Video cries for de-interlacing

[MorrisAtGuitar]

Surely implying magnets

[alquiora]

@MorrisAtGuitar surely not

[LAZERSHOT100]

does this look fake to anyone

[zilbiol]

That guy's good at spinning bicylce wheels, just what this country's next generation of business leaders and scientists need.

[Tanaerian]

but will it blend?

[spik3eeee]

WITCHCRAFT

[peterm3964]

MIT physics? a ten year old couold grasp this .

[MaestroAlvis]

@peterm3964 Really because college physics students have trouble grasping this.

[7160976]

Angular momentum

[0MGmimo]

Isaac Newton is called to the principals office.

[Sisatnak]

Chuck Noris' whirligig

[Csubakka1]

Gyroscopes freak me out.

[iPadZeeman]

@watscrick Isnt that the lorentzpower?

[iPadZeeman]

@watscrick

[everynickisunavailab]

@watscrick What you see is a very common optical illusion called the wagon-wheel effect, just wiki it ;)

[watscrick]

I know this is real and demonstrates the conversation of angular momentum, but is it just me or is the wheel rotating in the opposite direction that it should be according to the right hand rule?

[tiaxanderson]

@watscrick Now it's been ages since I've had physics and I've forgotten way too much since then, but isn't the right hand rule for magnetic fields?

[watscrick]

@tiaxanderson

The right hand rule does apply to electromagnetism, but it also applies to torque and angular momentum as well (curl the fingers of your right hand in the direction of the rotation and your thumb points in the direction of angular momentum).

If you look carefully, the direction of precession is opposite to what you should expect to conserve angular momentum (it should be precessing clockwise as viewed from above).

[zaca98leandro]

Nope, it is spining in the correct sense, as it should spin in the direction of the torque, as the

variation of angular momentum is the torque. torque = r x F, and F is the weight, which

is pointing down.

[tiaxanderson]

@GT2K2 So why exactly is this flagged spam? O.o

Anyway, thanks

[GT2K2]

@watscrick the right hand rule only explains that the angular momentum is perpendicular to the wheel. It says nothing about the direction of rotation.

[Intrafacial86]

It's real. It just looks weird because the video is interlaced, which makes all fast-moving things look retarded.

[fr3d420]

HI REDDIT!!! DERP!

[steerpike66]

It's perfectly obvious that this is real; the angle of elevation declines with the velocity of the wheel.

[UchihaHiroto]

Yay for conservation of angular momentum =]

[Aplaplap]

I N C E P T I O N

[deadapostle]

This is how you can demonstrate that even if you are on Earth, you're still in space, too.

[KIFulgore]

Man, I know the physics and even the math behind this, but it still just looks and feels weird.

[mnagmobile]

@KIFulgore then you don't really understand the math. Understand and get comfortable with the math then come back and re watch.

[xtrixsterx]

...FAKE AND GAY-

lol jks its really cool :D taking physics for A Levels

[zoebiflap]

HAAAAAAAAAX!!!!

[blaugran89]

I had to try this at home because I didn't believe it... It's works :P Science is interesting !

[RTRVII]

conservation of angular momentum. Or how matter acts rather weird when rotated.

[zetaseeker]

I just discovered why my single swingarm motorcycle is not so crazy as I thought it was! Cool

[knockdoun]

motherfuckin angular momentum up in this bitch

[danedaworld]

he's a lefty

[xferret15x]

gyros', apply force 90 degrees to the right for desired effect.

[Ciiwwii]

How can he give speed to the wheel from the handle. Yet still grab it without the speed of the wheel reducing alot?

[stef2570]

@Ciiwwii

Jesus christ, ever tried biking? You can accelerate by spinning the pedals, and when your too lazy to keep on working for it you let gravity take over and your feet stops spinning, but what the hell.. The bike keeps on going, it's a mechanical miracle!!

-.-

[Ciiwwii]

@stef2570 You missed the fucking point here Einstein! Look from what handle he gives the wheel speed. And when he grabs it the wheel keeps on spinning. The grabbing of that handle should take away massive amounts of speed because skin has a good grip when you put your fingers around something and squeeze to be able to lift it up. If you give your dick a twist and grab it, it stops! Read before you comment

[sharkriup]

Hahaha I first though that was real

[johneeo21]

@sharkriup it is real

[RTRVII]

@sharkriup it is real, done in any physics class room. Google the gyroscopic effect / conservation of angular momentum

[8888ACE8888]

years of relentless jerkin off allow this MIT geek to spin the gyro in a rapid fashion

[cessna65423]

I need a woman to SPIN MY TIRE!

[pithikoulis]

now I realise how easy it is to bike without hands as long as the wheel spins at a high rate

[jorvag]

Has anyone been able to explain this in a more physical rather than a mathematical way?

[johneeo21]

@jorvag the wheel has angular momentum. when something has momentum you must apply a force for a certain amount of time to change its oreintation or velocity. Since the wheel has a big mass and velocity the force of gravity acting on it is not strong enough to pull the wheel down. However, the wheel eventually slows down due to friction cuasing it to have less momentum and it falls. =)

[gyro5d]

OR, they just did an experiment with 2 optical clocks. Time slows down in a clock moving less then about 35km/h relative to its twin(gyros center). Time speeds up in a clock that is hoisted a mere 33cm above its twin(Time speeds up the farther you get from the center).So, the center of the gyro is slowing down time and its spinning wheel is speeding up time. Gyros align with TIME, like spacetime.

[itb55555]

anyone wanna explain this in full/show a link that has the full explanation for this? I just found out the final in my class has this as the first question (teacher told us because he knows we need to think about it before going into the test room) and I NEED to figure out how this works.

[TheRealMrRoboto]

I WOULD LIKE TO FILE A MOTION: Conversation of angular momentum 1 - Internets 0 

[newgtguy]

Gyroscopic precession at it's finest.

[newgtguy]

@newgtguy oops.... "its"

[newgtguy]

"its"

[ArtStone]

For extra credit, hold the spinning wheel in your hands by the axle and try to turn it like you were going around a corner. And you thought you were telling the bicycle to lean...

[buckeyealchemy13]

To fully understand this you must understand that both torque and angular momentum are vectors. The torque from the string points perpendicular to the angular momentum of the wheel, and thus can only change the direction of the angular momentum of the wheel and not cause it to fall. I recommend watching the Physics 8.01 lectures 20 and 21 from MIT, as those cover angular momentum in detail. This really can't be explained in a comment.

[9493760]

@buckeyealchemy13 THANKS . G. FRONZI

[AggieHiker]

Pretty cool, though I saw it on Beakman's world when I was a kid.

[SuperMilka]

You spin me round, baby right round.

[jaleesa02]

Does this have anything to do with Kinetic Energy or Potential Energy?

[Albireoxiii]

@jaleesa02 Well, everything has energy (proportion of kinetic and potential dependent upon position)so technically yes, but angular momentum is the overall principle behind a gyrscope.Angular momentum is conserved so a spinning object will continue spinning unless acted upon by net outside force. The gyro has no net torque applied to it. Outside forces are cancelled (why it cancels is where it gets technical). It stops cuz of friction between its parts. That's the best explanation I have, sorry.

[supersnigeln007]

Angular Momentum, It makes you dont fell out of your bike...

[genisrulez]

Can anyone explain in detail the physics behind this?

[ShadowWolf578]

Anyone who says it's "fake," "gay" or even " fake and gay" obviously did not pass 8th grade science or physics in high school. Simple science people.

[TenTonHammeRR]

this is a way to make stand dick with gyroscope inside more than viagra

[yay78900]

fake

[vincevelasquez]

@yay78900 woowwwwww you are very dumb

[whysohigh]

i was amazed when i saw this done............in elementary school science class about 20 years ago.

[MsCarissa88]

Damn physics, you scary.

[maestbobo]

Fake.

[IAreJackass]

@maestbobo If you have ever played with a gyroscopic spinning top, you'd know this was real. I'm not sure how exactly, but basically when it spins really fast, it does not want to be held in place.

[vincevelasquez]

@maestbobo you are also dumb

[TheRiCkJaMeS182]

i hear a "whoops looks like someone divided by 0" joke

[shaktir4u]

It looks like the torque produced by the twisted thread is having same effect if it was a non-rotating (static) wheel.

[shaktir4u]

If Angular momentum has to be conserved, why is the wheel's axis when it is horizontal is not staying in one direction?

[Lanza52]

@shaktir4u

Angular momentum is conserved when nothing else acts upon the system. On earth, Wind resistance and friction(of the bearings) decay the momentum. 

[taofledermaus]

Seriously? MIT and they don't have some sort of robot to get it spinning? :P

[IAreJackass]

@taofledermaus Yeah, but they'd have to replace the laser beams with hands and that would be boring.

[jasonwangproductions]

How it works is that it takes force to change the direction of the angular momentum of the wheel, so it would naturally tend to stay in the same direction it was before.

Damn physics, u scary.

[ironpooch123]

gyrocopter from Warcraft III

[Murphly]

@ironpooch123 they came from... behind!

[Lunkan164]

my friend ate gyros, and he is a muslim...we laughed about it later!

[zer0dahero]

Again, i'm totally amazed at the people who try to argue the gyroscopic effect. It totally blows my mind that some people are so ignorant so as to argue something they have absolutely no clue about.

[aboood578]

that's my totem!!

[JamesSCameron]

MIT lol

[iTak013]

haha, my professor did this demo a few weeks ago and it was fascinating and scary. lol

[cmd2tuts]

O MAN DUDE!!1! I REMEMBER THESE!!!

I loved playing with a gyroscope just like this at a planetarium in mexico my dad use to take me to!