Gyroscope precession

[kdc43]

The guy looks like Marshal Brain.

[theburtonnn]

Article blew my physical mind. science.howstuffworks (dot) com/gyroscope2 (dot) htm

[difficultjuggernaut]

What the fuck he said at the very begining? lol

[VendPrekmurec]

the calculations are a little bit complicated :P

but physics rules!

[qwakqwak151]

looks like lothar matthäus

[TheAmadeus1975]

theos!!! good

[optionsnone]

Can a gyroscope within a gyroscope who's(inner gyro's) attitude can be adjusted, both spinning in a vacuum make curved progression rather than static rotation ? Adding a third gyro 90 degrees to the second gyro is it possible to make linear progression ?

[cessna65423]

Phinias J Whoppie, YOURE the 'GREATEST"

[DJSeismo]

Real life bugs. We should report this to God. Just kiddin', I don't believe in God :)

[a8a92]

@vava54own hahaha, but if this wouldn't happen probably we couldn't even live in this planet to ride bikes

[PRocker320]

Angular Momentum FTW!!!

[Stormfury27]

Article is linked here: science.howstuffworks (dot) com/gyroscope1 (dot) htm

thumbs up for others to see

[cobrachoppergirl]

witchcraft! burn the witches!

[Th4Pwnz0r]

So... If you bailed (Fell over) On your bike, you just peddle really hard and you'll get back up? COOL!

[AJSunsetComputerAid]

@Th4Pwnz0r I wish. The wheels aren't suspended anymore. It's a nice thought, though.

[glumac16]

fuckin physics

[freethisone]

@glumac16 @heyeriica see my movies, i have solved coral casle. and precession.. have you?he was 41 years off.

we are in aquarius now

[vava54own]

Lol if this wouldn't happen. riding a bike would be extremly hard.

[hubertandclyde]

@vava54own Are you kidding? It is because this happens that riding a bike is easy. Sit still on a bike not moving an you will fall over sideways. When you are moving however the spinning of the wheels help keep you balanced.

[GManNickG]

@hubertandclyde Read closer. You probably thought he said "this wouldn't happen", like I did. He didn't.

(Probably because that's terrible grammar; it should be "if this didn't happen, ...".)

[tjinga2u1]

@vava54own this explains why its harder to fall when your bike is faster then it is when its slow the gyroscpoic motion prevents you from falling :P

[mortsdans]

@vava54own not really. ever ridden a scooter? its more about a persons sense of balance than the gyroscopic effect. like balancing a yardstick on your hand. by turning the bike you move the point of contact with the ground, just like moving your hand under the yard stick. im sure the gyroscope effect helps, but not significantly.

[RavenPrecept]

@mortsdans If you do play with a bike wheel you will feel that the force is very strong, much stronger than the weight of the wheel would lead you to expect.

[RuslanLagashkin]

@vava54own Depends on the mass of the wheel.

Wheels on modern bicycles are light so there are no problems in changing their direction for human.

[TheCuljat1994]

@vava54own how would it be so hard?

[AnimeBelover]

@TheCuljat1994

... duh, Did you not see that wheel maintaining itself in a vertical direction. Without precession, the wheel would return hanging horizontally. which mean, if you have a thin wheel, you would fall down...

[TheCuljat1994]

@AnimeBelover oh, haha i apologize, i didnt see the apostrophe in "wouldn't"

[heta71]

but bike have two bearing points

[Bptips]

@vava54own think you are rather stupid, as a bike wheel is supported in an upright position.

and the gyroscope effect shown in the vid has nothing to do with how/ why a bike works

[MrStankoman]

@vava54own Not true. A common misconception. The inertia is actually keeping you up, not the gyroscopic effect. Read more at:

Wikipedia:

List_of_common_misconceptions#­Physics

[DarkMaroon2]

@MrStankoman lol at wikipedia

[maxcap2]

@vava54own wheel would stay upright on a bike when not in motion since it's fixed that way.. it wouldn't flop over.. thats not the point of the demonstration

[nilsvids]

@vava54own OMG people is so stupid... there is no gyroscope effect on a bike.

[unforgivabl30]

@nilsvids ummm it is affected by angular momentum vectors soooooo. yeah

[nilsvids]

@unforgivabl30 yes you are right, but Thats not why the bike dont fall, it help just a liiiiiiittle cause the rpm is not high enough to cause an important gyroscopic effect, it is insignificant.

For exemple you can take a bike with a locked handlebarand and launch it at a initial speed of 10m/s, il will probably last 20 meters or something like that, cause the gyroscopic effect influences the bike balance.

[unforgivabl30]

@nilsvids i see what you mean that technically those forces can truely be described as gyroscopic, but you do have to admit that the forward momentum does resemble a gyroscopic or toy top effect. i think the guy in the video chose to use a bike wheel for dramatic effect because of its size and weight.

[nilsvids]

@unforgivabl30 yes it is a gyroscopic effect of course, but in the referencial "person+bike", its nothing, you cant feel it

[unforgivabl30]

@nilsvids mmmm thhaaaat's ... debatable ill leave it at that

[nilsvids]

@unforgivabl30 Do the same thing with you on the bike, with the same initial speed, meaning that there is the same gyroscope effect, you will fall really quickly cause this effect is distributed according to the weight, so now it become insignificant.

So its why I said that there is no gyroscopte effect, it is negligible.

I hope you understood my reasoning, my english is very bad, sorry

[nilsvids]

@unforgivabl30 So to conclude , with no gyroscopic effect, riding a bike would be not harder.

[304Stephen]

@vava54own I don't think the mass of bike wheels is that strong as to effect the ease at which someone rides a bike.

[Aviatorsmith]

@vava54own Wrong.

[vava54own]

@Aviatorsmith

I love how people reply to 2+ years old comment, as if no one else ever replied to it before.

I'm leaving it there just for that reason, even though I've learnt that it was wrong 2 years ago.

[yvesgomez]

if you do the same experiment with the wheel at a 45 degrees angle, what does happend ?

[bigstevie01]

Total ejaculation.

[dsephiroth4]

@yvesgomez Same thing.

[Anthonyk312]

@yvesgomez It stays at a 45 degree angle until the wheel slows down.

[mattDsaNdmAn]

@yvesgomez the wheel would remain (or defy gravity) at the angle it was spun at. so basically it would hang at the 45 degree angle

[PhuqueU]

Just Great!, Now you're gonna have Men in Black watching your house, talking into their sleeve, saying, "Can we kill 'em Boss, huh? huh? can we kill 'em? Could lead to anti-gravity and a decline in oil sales Boss, oh please let us kill 'em?"

[fordieform]

this is a true fact

you can read all about it in my book

-hero

[PhuqueU]

Really? are they parked outside your house right now?

[PhuqueU]

Oh you mean that your video is true and the wheel behaves such?

I don't doubt that at all, I don't dispute it one bit.

Yet "Myth Busters" will probably tell you it wont work in a vaccuum,

and that WTC7 will indeed collapse if someone farts.

[fordieform]

wat?

-hero

[PhuqueU]

@byorda

It was a shot at the corruption of media disinfo.

Go get an IQ.

[sphinxrising58]

@PhuqueU wrong, as ever hear of something called satellites? They all have one or more gyros in them.

[pygrre35]

belle demo pour la précession-gyroscope

[baosheng1989]

what is the different between precession and rigidity?

[mailoisback]

where is the article?

[yannickvst]

this is not precession, this is rigidity.

Presession is when there is an external force on the 'gyro' that is deflected 90° to the plane of the force

[Prasopchai]

Uhh... doesn't 'rigidity' refer to the deforming ability of a solid material? And isn't what you described as presession exactly what happened in the clip?

[yannickvst]

No,

rigidity is what basicly happens, the wheel stays where is was when it started to turn.

The clip does show presession but it is not what is meant. because of the fact that the wheel hangs on a string on one side, there is a force acting upward @ that side, when turned 90° into the direction of the spin, the wheel starts to turn. But this is not what is meant with the video. They are eplaining the capabilty of a gyro to maintain a point in space.

[Prasopchai]

Ahhh I see, thanks =)

[HansThane]

great!

[Zbinozo]

Include the link to the article in the description.

[yuletide]

and by linear I mean angular... you know what i mean

[yuletide]

linear momentum is fucking awesome \m/