who's here in 2024?

I'm going to be honest, you straight up jump scared me there at the end.

@umeshdhaked7638

6 жыл бұрын

yes me too

@lucijanplisic2713

6 жыл бұрын

Ye, i said "you fool!" :)))

@darthnegativehunter8659

6 жыл бұрын

fake loud sounds, always do that

@YamadaDesigns

6 жыл бұрын

He should have added some bloody special effects as if he was decapitated.

@fhemfjsj23able

6 жыл бұрын

wus

Coming back to rewatch this years later now that it's my university homework to watch it. I can't believe this was released back in 2012

I was stuck with the gyroscopic couple for a day or two, every time I thought I have understood, I would again get confused. But your physical approach made things a lot more transparent to me. Thank you very much, sir.

@alexwest5106

Ай бұрын

Did you really understand or are you just able to apply the right-hand-rule now?

that ending scared me XD

@pauliboy1823

9 жыл бұрын

Yup 😂

@dracorex7795

9 жыл бұрын

AJ Cary Legitimately made me jump.

@melicalol

8 жыл бұрын

AJ Cary holyshit I jumped off my chair.

@escraftTH

8 жыл бұрын

+AJ Cary (Ajc159 Mario Kart Wii) I was so shocked I pooped my guts out. (not literally)

@TheWhitefucks

8 жыл бұрын

+AJ Cary (Ajc159 Mario Kart Wii) +1

Can anyone further explain what he is torquing about?

@user-tb9yv4zz3u

8 жыл бұрын

Oh ha. Ha. Ha.

@ThisGuyRides

8 жыл бұрын

Ask Miley Cyrus? She seems to be an expert torquer.

@esatd34

8 жыл бұрын

Guys, this guy is awesome

@MassDynamic

8 жыл бұрын

quit torquing around

@MrG0CE

7 жыл бұрын

TORQUING IS A VECTOR WITH THE UNIT (N*m) OBTAINED BY A VECTORIAL MULTIPLICATION OF POSITION (m) BY A FORCE (F), WHOSE DIRECTION IS GIVEN BY THE RIGHT-HAND RULE. NOW IN THE CASE OF THE VIDEO'S EXAMPLE, THERE'S 2 TORQUES: T1=(AXIS POSITION BETWEEN THE WHEEL'S AXIS AND THE ROPE)m X (WEIGHT FORCE ON THE WHEEL CENTER)N=N*m AND ITS DIRECTION IS OVER THE CAMERA. T2=(AXIS POSITION BETWEEN THE WHEEL CENTER AND ITS CIRCUNFERENCE)m X (COUNTERCLOCKWISE APPLIED FORCE ON THE CIRCUNFERENCE)F=N*m AND ITS DIRECTION IS PERPENDICULAR TO T1 IF WE MAKE T1 + T2 VECTORIALLY WITH PYTHAGORAS (CZ BOTH ARE PERPEDICULAR ) IT SHOWS A VECTOR THAT MAKE IT ROTATE WITHOUT FALL DOWN (WITHOUT FRICTION)

How humbling is the pursuit of knowledge. I came here after a several week long binge of spinning tops, and it took me that long to formulate the question relating to momentum and procession. I am a retired carpenter and the only math I have ever used is Trigonometry for stairs and rafters.

Damn, this video doesn't seem 10 years old at all! Your quality is fantastic nowadays but man, you had it on a next level back then too!

@sandercohen5543

11 ай бұрын

2012 is not that long ago, right? RIGHT?! >.

@TamimProduction

11 ай бұрын

@@sandercohen5543 It's definitely as long as someone's age :D

@PluetoeInc.

7 ай бұрын

@@TamimProduction jesus ?

@ayushsharma7184

Ай бұрын

​@@PluetoeInc.WADATFFF

The bit at the end made me jump.

@mrnqr2001

10 жыл бұрын

Yeah did the same to me, man. That's what I get for being half awake.

@YuBGamerzBen

10 жыл бұрын

Love it when you find out you're not the only one XD

@mrnqr2001

10 жыл бұрын

Hahaha yeah man!!

@macewindu9011

9 жыл бұрын

dude same

@mir3589

9 жыл бұрын

don't drop a samsung galaxy s4 on your face when someone is hitten by a spinning wheel. it hurts

At 1:21 you say that torque is given by: T=F x r, but isn't it T= r x F?? The order matters when it comes to cross product.

@exscape

10 жыл бұрын

You are indeed correct, but this is fixed in an annotation.

@ayushgupta3234

5 жыл бұрын

rxf equals to minus of fxr

@vaasubansal2523

5 жыл бұрын

@@vishalmali921actually it is radius VECTOR and not the magnitude, with direction from centre to edge.

@Someone-ex5ed

5 жыл бұрын

You are right, but he used the right hand rule in special way that he get a correct direction

@manasd28

5 жыл бұрын

True that

Thanks for your explanation, Veritasium!

@HandsomeBastard

4 ай бұрын

His name is Derek, he said it right at the start of the video.

@death_nope

23 күн бұрын

mangovid!

This video is probably the best and simplest way to explain Gyroscopic effect on KZread. Good work.

The way you explain things is amazing. Schools around the world should have teachers like you! Thanks for the vid. Great work as always!

@user-ld6wo4rv8h

8 ай бұрын

Male teachers get metoo'd so that's why there's only incompetent female teachers in the education system now.

Wow this was great. Nice, clear explanation with a perfect visual representation of the vectors. This is exactly what I needed.

Great video. I've been watching this video for the past 8 years !!! The arrow's vectors were amazing to view the actual thing. Thanks Derek. As with everything you do, it's always very well made and full of love and details !! 🏆

You cleared my concept in just 8min(actually i had to watch it twice) what i was trying to understand from last one hour. Thank you.

The torque vector as described would actually be R cross F, not F cross R. Don't forget this on your exams or you will definitely get the wrong answer!!!

@cpK054L

10 жыл бұрын

You'd just get the answer in the opposite direction. Going any further, yes you would be completely wrong. But the rule of thumb is, stretch the fingers across the radius, then curl your finger in the direction of the force. If they get this concept it should fall together.

@pallavi6013

3 жыл бұрын

he did not say that it was the cross product. He simply said "F times r",which means he did not imply to say that the cross product is F x r

@DaylightDigital

3 жыл бұрын

@@pallavi6013 Then why did he change it and thank me for pointing it out.

@nikos4677

Ай бұрын

@@pallavi6013Elementary school students don't watch this video so it's kinda implied that he meant cross product

Very nice and informative video. There is a small typo at t=1.14. The torque is not F cross r, but r cross F.

I watched a bunch of videos and checked this concept out in few books too but nothing made sense as much as Derek's video did. World's blessed to have a youtuber like him😊😊

Amazing! Thanks! I am a PPL(A) student pilot and this video makes understanding gyroscopic precession easy!

If you are more used to using force, mass and velocity, you can integrate the weel as connected rotating masses having the rotational force distributed among them, then you'll see that the masses along the weel will follow curved paths according to the rotating directions

Learning this for my Mechanical Design! Thanks for the input, Derek!

I have watched many videos but this explains a lot about the gyroscopes. Thank you

good clear demonstrations and explanations. Now I understand force torque angular momentum and precession. Thank you Sir.

I love science, especially when it is fun (near the end of this video). :D

That's extremely clear and logical for me, make perfect sense! Thank you for dedicate yourself to doing all of the awesome stuff in your channel and applying science in to real world! You are my idol seriously!

The best explain that I have already seen! Congratulations for your didactically!

I've loved this channel for a long time but had no use for the information in everyday life (other than going out to apply it). I'm now training to be a pilot and my book didn't have the greatest explanation of this. This example was crystal clear. Thanks!!!

@rosman2635

4 жыл бұрын

Try not to wait 25 years to discover what this lady realised kzread.info/dash/bejne/pYqMkqivhLHakto.html

Man physics is truly amazing, really one of the most amazing subjects out there

You explained this more clearly than my physics professor... thank you :)

This was mind blowing. Very easy to understand! Thank you

Nice video! I was looking for a video explaining the physics behind Ultimate Frisbee throws for a school project. This helped me but I also realized that there aren't any videos scientifically explaining a Frisbee throw. I think you'd be the best option for posting a video on that topic. What's more, most people have thrown a disc at some point in their life. Therefore, people could easily relate to more complex concepts like gyroscopic precession as it's visible in a frisbee throw.

Another great physics video from the University of KZread. Thanks.

@Dreamer.3x3

2 жыл бұрын

you commented this 6 years ago but I'm your second liker, it's an honor.

Thank you! Much clearer explanation than my physics professor's!

@Simis999

10 жыл бұрын

ahahaha :D 5 likes = 5 "happy edu system competitors"

Wooow I’ve never seen this before. Really cool. Great explanation and demonstration!!

Thank you for creating this video, it helped my understanding of the forces involved in the precession of spinning objects. I found your video while looking for a video of someone who has connected two bicycle wheels on one axis, spun them in opposite directions to verify that the angular momentum vectors of each wheel cancel with one another resulting in the absence of the gyroscopic motion. If you are so inclined, I would like to see you do the experiment or link me to a video where the experiment has already been done.

I've always wondered if you used 2 spinning cones to form a hollow wall and pumped water from the narrow end to the wide end, and back again. Would the engy of pumping translate to a force. Sideways or down?

cool

@whitemingo8152

3 жыл бұрын

Nani

@TheCapedArtist

3 жыл бұрын

Lmao

@kennarajora6532

3 жыл бұрын

Channel name : "How To Make Sushi" *clicks on channel* recent videos : "Burnt Basque Cheese Cake"

@farrel_ra

2 жыл бұрын

@@kennarajora6532 Hahah

This is legitimately the best veritasium video ever.

Thank you, that was a very crisp explanation without any fluff.

Hey Derek! that was so cool how you broke down the concept into simple easy to understand force vectors. Gyroscopic Precession with the bicycle wheel was something I really struggled to understand in physics class. Just wanted to say I figured out a way to explain the same concept and do the same demo with a fidget spinner on my channel so if you want to learn a little more, feel free to check it out :)

@coolstar7819

Жыл бұрын

Hey that sounds cool! But I can't find it...

Omg the end made me jump! lol.

@Tuhkiksenkana

10 жыл бұрын

I jumped too xD

@twcellis

10 жыл бұрын

I almost died. Headphones up too loud.

@JLukeHypernova

6 жыл бұрын

I saw that coming a mile away

Amazing stuff. And thanks to KZread I can play bits and pieces 20 times until I get it.

My first real experience with Gyroscopic Precession was in class in the Air Force for Inertial Nav. The Stable Platform held three gyros in three different axises. The platform failed to spin up, to our Instructor had three of us wait five minutes, he'd go get a replacement and we'd move it to the floor. We waited the five minutes, not quite enough, it was still spinning enough that we couldn't control it enough to even come close to getting it on the floor where he wanted it, we had to lean how go guide it and we put it about ten feet away! In practice, out in the field you wait thirty minutes before moving it. Especially out of the front Cockpit of an F-4 Phantom.

You blew my sh**t off at the end!!!

@johnnybatafljeska6368

7 жыл бұрын

If you have a door, you excert a force(like a short impulse) where the door knob is... the door starts moving ''rotating'' , and that ONGOING movement is the angular momentum, and the torque is responsible for it

Veritasium Actually, Torque=r X F and not F X r. This will change the torque's direction.

@johnmcleavy3307

9 жыл бұрын

***** they're the same thing.

@thisisadiman

9 жыл бұрын

John Mcleavy Torque is a vector and therefore r X F has the opposite direction to that of F X r although their magnitude will be same.

@zeratulzum9719

9 жыл бұрын

Alwin Priven Vector product is not commutative.

@AbitrarySage

9 жыл бұрын

Cross product of vectors is not commutative; dot product is commutative.

@nujuat

8 жыл бұрын

+Alwin Priven it's about that hand movement he did to find the direction. To figure the direction out for any cross product you point your fingers in the direction of the vector before the 'X' and then curl them towards the direction of the vector behind the 'X'. If you try it out you'll see that if you reverse the order that you take the cross product of the vectors the product will point in the opposite direction :)

Thank you, Veritasium. I legit understood it.

I love smartereveryday. Destins enthusiasm and hunger for knowledge is what drives me to his videos. It's kind of the same for you. Guess I see your channel as kind of Destins younger brother channel. Hope you don't take that as a provocation, because to me it's beautiful science and knowledge!

3:44 We need that sound in a game when player dies

Hi, I would like to know if you had two wheels, counter balancing each other and both spinning in a counter clockwise motion from the center point as the one in your video is doing, would they possibly create less tension on the suspending rope? If force were also applied to the orbits making them spin in a counter clockwise motion (top down) as this one is, would that possibly create a small amount of lift?

@TheHuesSciTech

8 жыл бұрын

+RonALampman No, the force on the rope remains the same. If you have contra-rotating wheels, the angular momenta cancel out, and the thing just flops over like normal (except in the case you describe, where it sounds like the weights are balanced, so it could easily stay upright). But there is no antigravity going on here, the tension on the rope equals the weight of the wheel, always.

@RonALampman

8 жыл бұрын

+TheHue's SciTech The reason I ask is because I know when a bullet is shot at a wall or hard ceiling at a low angle from the wall or ceiling, it will follow that surface (wall or ceiling). For instance, if in a concrete tunnel and firing a round angled slightly up from vertical and near the ceiling, when it ricochets off the ceiling, it will continue to curve toward the ceiling until it looses enough velocity to overcome it's weight. The same holds true for throwing a light, air filled ball. When spinning backward from the direction it was thrown, it will rise. I've done this with small beach balls many times.

@TheHuesSciTech

8 жыл бұрын

RonALampman Oh sure, aerodynamic effects (like backspin & lift) are real things for sure. Normally not considered in problems like this, though! And unfortunately, drag always comes along and spoils the party.

@RonALampman

8 жыл бұрын

+TheHue's SciTech LOL True! But I still intend to do an experiment with this concept when I get my shop finished and 3D printer setup.

@RsGhost1

2 жыл бұрын

Then the sum of the torques is zero and angular momentum is conserved i.e., the wheels will not tilt, but keep spinning until friction/drag brings it to a stop.

Dude this changing of thumnails is really working, im rewatching a LOT of old videos

very fascinating and well explained, thank you

Okay, I know this is an "old" video, but I'd really like to see what happens when you have two wheels spinning in opposite directions on the same axle.

@botfred743

3 жыл бұрын

their torks would cancel and the whole thing falls down. BUT the wheel that is farther away from the rope has a bigger distance so its angular momentum will count higher towards the total tork

@vnarayan18

3 жыл бұрын

@@botfred743 yessir youre right

@jasons408

2 жыл бұрын

Annuls the forces. You see that at the end of the bicycle vid

@dalauder

2 жыл бұрын

That depends on which side of the rope they're on. If they're on opposite sides, it will rotate around the vertical axis faster, right?

@parikshitkulkarni3551

Жыл бұрын

Okay, I know this is an "old" comment, but I'd really like to say that when there are two wheels at equal distances from the center of the axle the torques due to gravitational force cancel out each other and the wheels keep spinning how the are. But it will be interesting if the wheels are imbalanced, say different distances from the center of the axle or different masses. I think that also will be some kind of weird and mathematically complicated gyroscopic motion

The force is an energy field created by all living things. It surrounds us. It penetrates us. It binds the galaxy together.

@robtavius

10 жыл бұрын

Mmmm. Correct you are.

@danielschilling2011

10 жыл бұрын

He said the force a lot so I felt compelled.

@alexo3720

10 жыл бұрын

it penetrates us?

@robtavius

10 жыл бұрын

Oscar V LMAO It's ok. It buys dinner first.

@rooftopvoter3015

6 жыл бұрын

Duct tape works also

Never understood this phenomenon properly until I watched this video. Thanks😁

Thank u sir, right now i m studying the gyroscope, and get confused about their direction, but ur video helped me to get out of this confusion

As far as I have read, torque is not force cross radius, it is radius cross force. This cross product thing changes the direction completely so He always told us to be careful

It took me about 2 years to actually get this. Vectors can be confusing.

@amaanvzer6923

8 жыл бұрын

+Sangwoo ‘KeimaFool’ Shin Exactly, this confused me so long 2 years ago.

@TheAbdulalkhattari

8 жыл бұрын

+Sangwoo “KeimaFool” Shin that means one year to go for me.

@givemeyoureggs456

7 жыл бұрын

I am in fourth grade and I think this kinda hard

@ChuaShaoCong

7 жыл бұрын

I watched this 2 years ago and I still don't understand... Do you happen to have any resources on this topic online?

@freshrockpapa-e7799

7 жыл бұрын

All you need to understand this is how vectors add. It really isn't that complicated. Also, torque is the change in angular momentum, and angular momentum is (in this particular case, not true for every solid) is a vector that points perpendicular to how the object spins.

Watched videos from this channel for entertainment and interest when I was a kid.... Now watching them to clear doubts for my upcoming exams... Studying aerospace engineering (mechanical)

It is nice to see how Force and torque play nicely with the rules of vector

I wanted to see that specific helicopter video by Destin by following the link shown on this video. Disappointingly I ended up on his youtube homepage instead. With hundreds of videos to browse through I soon gave up. Hate it when that happens.

@payKev

10 жыл бұрын

i can help with that.. watch?v=Cg1CPmtZL4c&list=PL6CECC2E56B68A2C3

At 2:59......why does the "torque pushing THAT WAY swing the other Angular Momentum vector THIS WAY"? We can see that happening quite clearly in the video, but please explain WHY that happens?. What would happen if I spun that wheel in the opposite direction...the wheel would now precess in the opposite direction, correct? So clearly the direction of precession has something to do with the direction of the angular momentum of the spinning wheel. We can see from your video that the effect of precession is always to try and align the axis of the angular momentum of the wheel with the axis of torque caused by gravity. Since we are balancing the wheel only on one point, as the axis of angular momentum of the spinning wheel starts to align with torque, the wheel turns and as a result the direction of the gravitational torque also rotates about the vertical. This goes on and on and the wheel then turns and keeps turning like the way it does. But my question is not WHAT happens, but WHY does this happen. thanks.

@vaishnavikulkarni8104

8 жыл бұрын

+aswan korula then then r cross F drxn wud change so the wheel will now spin in the opposite drxn while mg cross r is still in same drxn obviously.. so now the resultant vector will be supporting opposite motion of the wheel

@aswankorula8472

8 жыл бұрын

yes, but why? why does the angular momentum vector try to align with the gravity torque. I understand that it does this, but my question is why?

@tylerbartunek8894

8 жыл бұрын

+aswan korula Torque is an analog for force. while a net force is a change in linear momentum over a time interval, the same is true for torque and angular momentum. So if there's a net torque that implies the angular momentum is changing. In this situation the direction is changing. Somebody correct where I'm going wrong here, I'm pretty new to this topic

Thank you so much. The lecture vids my prof assigned made absolutely no sense because they don't teach visually like this. It makes complete sense now

Finally got crystal clear understanding. Thank you.

I jumped at the end, haha.

hahahah nice ending it got me

Thank you for posting this video. Now I understand what my physics book is trying to tell me about precession.

Brilliant demo and explanation. Viewed that way, it's impossible not to understand gyroscopic behavior.

What I don't understand is at 3:48, i.e., "There's a torque pointing out this way (short purple arrow)" I don't believe that he had introduced or explained this torque. Not to my understanding, anyway.

3:28 hey vsauce

More mechanical physics videos please. You make more sense then my instructor!

Pretty sure I was able to imagine this in my head decades before learning it is true. Thanks for reminding me!

Hi there, first Of all contrata on The chanell!!! I love it!!!I'm a Airbus captain and I also fly helicopters and I always had a question about precession that nobody that I know can answer me...What is the speed that a disc must be turning to begin having the gyroscopic precession?!?

@claudiuspereira3194

6 жыл бұрын

42 everyone knows that

@VistaPanoramicabyLello

6 жыл бұрын

Thanks a lot Claudius!!! but 42 what?!?

@jessevos3986

6 жыл бұрын

(it's a joke)((or maybe i'm just stupid and you double joked me))

@marekwazynski7595

6 жыл бұрын

Physics work at every speed, it's just that the forces may be too small to have an observable effect on the disc if the speed is low. The answer would be then: any speed, you just may not be able to see it. simple.wikipedia.org/wiki/42_(answer)

@VistaPanoramicabyLello

6 жыл бұрын

Thanks Marek... thanks a lot!!!

Gyroscopic procession is where an induced gravity field is rotated out of phase with the atom core center of the planet.

That was a great demonstration. The rotation on the rope was opposite what I expected. If you spun it faster, would the axle remain more horizontal? If the bearings were perfect, would the axle maintain its angle for extended time if the wheel held its speed? or would it be necessary not to let spin on the rope for the axle to maintain angle? Does the spinning on the rope eventually allow the axle to go to the vertical? Would forcing it to twist the rope the opposite direction make the axle go beyond horizontal wheel on top?

Very clear audio, way better than our recorded lectures here at the University of Illinois.

It sounded like he was saying Twerk. Maybe thats where the term came from. Twerking is really just Torquing.

@sirboi

8 жыл бұрын

+Anthony O'Toole *Inception horn*

@addemfrench

8 жыл бұрын

+Anthony O'Toole I think twerking needs its own distinct physical analysis, somewhere in the field of oscillatory motion and forces of attraction.

@kaidatong1704

8 жыл бұрын

+Anthony O'Toole The little top from inception

@connorcolestock4757

8 жыл бұрын

+Akuma Tokkou still force at a pivot distance

@wordle6432

4 жыл бұрын

really funny!!!!

@Veritasium At 1:15 tau=r X F not the opposite as you wrote!!! vectorial product is not commutative!

And here, you are approaching 10 million. And your this video is benefitting still 10th generation of STEM child.

Got linked to this old video from Dirk from Veristablium. Always a pleasure!

Haha the ending was so silly it made me laugh

That ending damn ... I was wearing headphones at its highest volume ... :^)

@borismedved835

3 жыл бұрын

My headphones barely survived the ridiculously obnoxious noise at the beginning. Kept watching because I had time to do it and because I was hoping to find some stuff about a spinning globe... Low volume, because I was afraid there might be more of that.

you are doing a great job keep it up. thanks for video...

If u take consider standard unit vectors along the x, y, z axes ; in the video torque due to rotating the wheel is along -î and torque due to gravity is along +j^ (initially) so their resultant is along the diagonal. Now direction of torque gives axis of rotation so the axis becomes diagonal. But as wheel rotates in horizontal plane the resultant torque rotates with it . This continues and the wheel doesn't go down. Am I right? PS, torque is R vector cross F vector not F vector cross R. BTW great video.😃

Okay but why does the torque move that certain way? That first equation didn't talk about how much force is also being applied upward since it's a wheel. It is then defying gravity, right? The downward spin pulls toward earth/gravity source but the upward spin pushes towards the sky. I have a bias against equations because they're not language-friendly, but I think there's some mistake or something missing from this explanation. I get that the spin creates a rotation, but I still feel as if there's no proper understanding as to why it's not bouncing around everywhere. Does the downward and upward pull just... cancel each other out?

@JapanForSale

8 жыл бұрын

The torque from the wheel spinning on its axle creates the torque (the red arrow) that keeps it up, since that torque wants to keep traveling away from the axle longitudinally. Then torque from gravity pulling the entire wheel downwards create the 2nd, and separate, torque, which is the one that's causing the entire wheel to rotate around the rope. At least that's my understanding of it. I'd be glad if someone can verify this.

@JapanForSale

8 жыл бұрын

As in, there're two entirely separate torques in play here: 1st torque: the one created by the wheel spinning on its axle, indicated by the red arrow; and 2nd torque: the one created by gravity trying to "swing" the entire wheel assembly downward, which is now translated into pushing the entire assembly sideways. The 2nd torque only pushes instead pulls down because of the 1st torque trying to pull away in the direction of the red arrow, thus keeping the entire assembly relatively perpendicular to the ground, until that torque slowly dies down due to the wheel spinning more and more slowly, caused by the friction between it and the axle.

@AdamService

8 жыл бұрын

Ah alright, I get it now, thanks.

@colindupee

8 жыл бұрын

So, is there a third upward torque from the resulting rotation around the rope, or does the concept of torque not apply because there's no mass on the other side of the ... fulcrum?

As I understand, the direction of the angular momentum vector was chosen arbitrarily. In other words, we could have made it the left hand rule. It is just a way to describe rotation easily. I feel like this description is trying to say this phenomenon is caused by outward angular momentum, but that's just a concept we invented. To understand the real reason you can think of the top of the wheel as a point. With no spinning, that point will travel outward, pivoting around the string vertically. But this point is moving around the wheel, so the side of the wheel that the top rotates towards gets pushed out. In the same way, the bottom of the wheel is trying to travel inwards, so the other side of the wheel gets pushed inward. So if you think about it, it's just like applying an outward force to the left of the wheel, and an inward force to the right of the wheel, or vise versa. That's what causes the horizontal rotation instead of the vertical rotation.

@namannamish3343

2 жыл бұрын

thanks a ton for this visualisation, it was EXACTLY what i needed to understand it!!

Good explanations here. How about making a video showing how a gyroscope behaves in a non-inertial frame, e.g. while sat on a fixed-speed roundabout?

My AP Physics professor showed us an experiment like this, but his bicycle wheel was filled with cement, so it had more mass (momentum? inertia?). He had us hold it, while on a swivel chair, and sped it up with a drill. We could steer the direction of the chair by tilting the wheel. I didn't understand the maths of it at the time. (I know this is 7 years late, but I just discovered this channel.)

From my standpoint as a physics student, this explanation is not accurate :/ The right-hand rule for vectors associated with rotation is simply a convention. The convention could just as easily have been a "left hand rule", and with the logic presented in this video, the explanation is no longer consistent (with the logic presented in this video, a left-hand rule would have resulted in the bicycle wheel precessing in the other direction). From my understanding, angular momenta are conceptual one-directional axes that exist in three dimensional space. They do not originate from points in space and go outward from those points; they are axes. With this understanding, the explanation present in this video is incorrect. I appreciate the correction made at 1:11. Angular momentum is a "cross product", and the order of the "multiplication" does indeed matter.

@felipea.barretto7503

8 жыл бұрын

Actually, if we adopted a left hand rule, it would still work.

@joshd.1651

8 жыл бұрын

Felipe A. Barretto explain? I tried using a left hand rule and it doesn't work, but I'd like to see your interpretation c:

@felipea.barretto7503

8 жыл бұрын

Josh D. Try using it in both the angular momentum and the torque.

@prosincr

8 жыл бұрын

1D axes are the same as having something come from a point.

@joshd.1651

8 жыл бұрын

Dilip Tien Axes do not originate from any point. They are lines.

Does this explain why you are able to balance on a bicycle even though it should fall over since it doesn't have enough wheels to stay up on its own (like a car)?

@TheHuesSciTech

8 жыл бұрын

No. A lot of people claim that gyroscopic effects keep a bike up, and a lot of others claim that front wheel rake distance is what does it. But scientists have built bikes with contra-rotating wheels and negative rake distances, and human riders can still ride them just fine. It turns out the control systems in our brain are all that's required! Having said that, a riderless bike can stay upright if it has a positive rake distance, whereas it can't with a negative rake. So absolutely, all these effects are useful to some extent. But it really is primarily your brain that keeps the bike upright.

@StickPlaysBR

8 жыл бұрын

nice response m8! you explained it pretty darn well.

Nice sir, you're wonderful I was trying to understand helicopter working and couldn't comrehend gyroscopic precession and now I get it.

Hi, just saw the coast guard videos and came here. 11yrs after 😂. Thank you for the series

Now put the mass on the outside of the wheel and see what happens. Where's the angular momentum gone? ...

@udayapalihapitiya7972

3 жыл бұрын

I saw another Explanation of about that wheel in youtube.

@udayapalihapitiya7972

3 жыл бұрын

kzread.info/dash/bejne/iZiGscmch7PXmZM.html this is the link of that video.

@nithin1729s

3 жыл бұрын

Now the torque applied by gravity increases and the frequency of precession increases

That last bump made me jump

This was a weird episode of On Cinema On Location, but I liked it!

I always thought that some force is acting on the wheel in the upward direction due to spinning which balances the gravitational force and restricts the wheel from swinging downwards. You made it really very clear that the angular momentum due to the affect of gravity on the wheel is being used up to move the wheel forward. And due to the conservation of momentum the wheel is not swinging downwards along the string because all the momentum is being used up to move the wheel forward (Actually backward i.e against the direction of the spin).

hi to all the student pilots who are watching this :)

@13htorrespr

8 жыл бұрын

+Mayank Kashyap LOL - Yup, read about it but wanted a video to help me understand the left turning tendency due to this phenomenon...I still don't fully understand it, so for now, I'll keep on using right rudder on take offs and will keep on learning :-)

@anuradhagroundtraining3712

8 жыл бұрын

+Hector Torres hahaha 😀😀 happy landings brother.

@airbxnee

8 жыл бұрын

ATPL lifeeee... lol

@Pathaangainz

5 жыл бұрын

Lol just started flight school. I just wanted to grese some landings, not learn about gyroscopic presecion.

@TheWindigomonster

5 жыл бұрын

@@13htorrespr Leaving this comment for future confused student pilots - left turning tendency is due to a few different phenomena, but there are 2 main ones that your flight school will want you to know. The first is that a propeller is really 2 sets of wings, which are spun in order to produce forwards lift and pull the plane forward. The downwards spinning blade actually produces slightly more lift than the upwards blade does, and as such will pull the plane to the left. Some airplanes have propellers that spin the other way, and those aircraft actually exhibit a right turning tendency!. The second phenomenon is due to the propeller slipstream. This is often over-complicated in ground school, but it's really easy to understand once you can visualize it. Air that comes through the propeller leaves in a spiral motion (due to the aerodynamic effects of a spinning propeller) and this spiral surrounds the aircraft. This spiral hits the side of the rudder, thereby pushing the plane to the left.

Did he just quadruple Vsauce at the end there?

1:03 - 0:55 There is an example we can do about the rotation of objects where the force trying to rotate the wheel increases the energy stored in the acceleration of an object in the direction of this force

Well explained. Loved that