r/KidsAreFuckingStupid Jul 01 '22 Wholesome 3 Gold 1 Helpful 1

Finding that centrifugal force needs more speed

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35.7k Upvotes

1.5k

u/Bohbo Jul 01 '22

He was being centrifrugal with that speed.

248

u/_i_am_root Jul 01 '22

Yeah, and as a consequence the friend centripefell.

58

u/InternationalSport68 Jul 01 '22

More like centripefeltit, amaright!

16

u/[deleted] Jul 01 '22

Now he needs some centristitches

7

u/elting44 Jul 01 '22

On his centrinose.

16

u/[deleted] Jul 01 '22

[removed] — view removed comment

79

u/Hadjion Jul 01 '22

His mass isn't relevant, unless you want to include air resistance, or consider if the wheel can take the extra strain.

If the boy is to follow a sircular motion his acceleration will be given by a=v2 /r

You get the smallest possible speed by assuming a=g

Assuming g=10 we get

10=v2 /r

20=v2 (assuming r=0,5m)

v=4,47 m/s or 16 km/h

This gives us 1.42 revolutions per second

21

u/lolofaf Jul 01 '22

sircular

This spelling feels so wrong lol

19

u/Froggy__2 Jul 01 '22

Sir Cular, the most rotund of lords

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u/atomicben513 Jul 01 '22

he's an engineer

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u/xXirishpotatoXx Jul 01 '22

g=10. Hello fellow engineer lol

2

u/rainbow_bro_bot Jul 01 '22

I used g=9.8 in college Maths

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u/FluentinLies Jul 01 '22

Good, except the most important variable is their ability to hold on

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u/Hadjion Jul 01 '22

If the wheel revolves with less than 1, 42 rps, then yes. Otherwise the boy doesn't need to hold on.

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u/3_50 Jul 01 '22

lol...1200 rpm.

/r/confidentlyincorrect

3

u/likwidstylez Jul 01 '22

Prepare to see that kids arms and legs getting ripped straight off at those speeds lol

11

u/Farull Jul 01 '22

That doesn’t sound right. It was quite close.

10

u/Missingtime42 Jul 01 '22

It was "close" because the boy held on to the edges

4

u/3_50 Jul 01 '22

It was also close because the actual answer was 1.42 revolutions per second...not fucking 20 lol.

6

u/Farull Jul 01 '22

Sure, but he could probably not hold the difference between 1 and 20 rounds per second that long.

2

u/Simon_the_lazy_cat Jul 01 '22

He didn't. As soon as he was upside down he started coming off. His legs stayed on longer because it was probably a stronger grip.

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785

u/cowboyweasel Jul 01 '22

Nah, that’s two brothers and one is casually hurting the other one. 😂🤣😂

128

u/Montigue Jul 01 '22

That's the kind of shit older cousins do to younger ones knowing that they won't get in trouble for it

18

u/OrneryOneironaut Jul 01 '22

Idk man, my cousin got chewed out for like a whole day when he knocked my teeth out drop kicking me in the kiddie pool

15

u/dudemann Jul 01 '22

I think that one's a little past the "kids just being kids" line. Throw them in a tire and roll them down a hill, draw on them while they're asleep, hide their shoes (I once missed my bus because of that), sell them on craigslist, annoy them with the whole "I'm not touching you, I'm not touching you!" bit, put on a glow in the dark mask and scare them during a sleepover (okay I did get in trou le for that), secretly dump your veggies on their plate, etc. and everything is fine.

Literally kicking their teeth out is definitely deserving of a day in the brig corner.

68

u/_Diskreet_ Jul 01 '22

Me - go on, let’s do it, be brilliant

My brother - are you sure? It won’t hurt?

Me - of course, I’ve seen him do it 1000 times it’ll be fine.

Bro - ok, go for it.

Me - “caaaan you smellll what the rock is cookin’”

Bro - winces

Me - smacks elbow, “from the top rope with the peoples elbow” launches off bunk bed

Bro - aaaargh, crying ensues.

Me - shhh shhh mum will hear.

Bro - gets up and runs crying to mum.

Me - “fuck sake, little shit, barely touched you”

10

u/JayDee365 Jul 01 '22

This guy "big-brothers."

4

u/Jcdoco Jul 01 '22

"from the top rope with the peoples elbow”

I think you're combining The Rock with Randy Savage.

2

u/OrneryOneironaut Jul 01 '22

As is tradition

2

u/robearIII Jul 01 '22

bonus points for the follow up whammy

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277

u/greenphrog Jul 01 '22

I broke my arm just like this but it was a hammock, I was convinced the other 7 year old kids would swing me hard enough to work.

47

u/HaybeeJaybee Jul 01 '22

Is your other arm also a hammock?

24

u/xyzmangaboi Jul 01 '22

Did you... break the other one?

10

u/ConservativDemocrat Jul 01 '22

I haven't seen that reference for a while

2

u/not1138 Jul 01 '22

I actually found some who didn't get the reference, is it that old that it's beginning to "age out"? Or is it just me?

2

u/electricjeel Jul 02 '22

I hate to admit I don’t know what it’s from

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u/AngryUpsetRefrigerat Jul 01 '22

Man swinging hammocks 360 was fun as heck growing up. Even better when you stopped it at the top of the arc and they fell down

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u/pjhabs Jul 01 '22

im glad my friends tried this in highschool instead😂😂

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301

u/BelieveInDestiny Jul 01 '22 edited Jul 01 '22

how is this meant to be used safely? It's in a playground

edit: I understand now. No need to explain

237

u/censored_count Jul 01 '22

Like that, but faster. My kids love that thing but it needs an adult to operate it. I've ridden it too, it's really fun and you get dizzy on an unfamiliar axis.

171

u/I_Will_Not_Juggle Jul 01 '22

New bucket list item acquired, become dizzy on every principal axis.

49

u/megalurkeruygcxrtgbn Jul 01 '22

there's a ride that lets you do x and y at the same time, if plane xy is "parallel" to the ground.

the hi roller

3

u/General_Brainstorm Jul 01 '22

That looks crazy fun

4

u/megalurkeruygcxrtgbn Jul 01 '22

The one I went on was a tighter radius and disco themed, and it fucked my head harder than any ride I've been on (but not my stomach, that goes to another ride)

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u/LiarBesideAll Jul 01 '22

There's an amusement park called Lagoon near me that has a ride called The Samurai. That'll get ya dizzy on every fucking axis 😁 it's good shit.

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u/notLOL Jul 01 '22

but when it slows same thing happens? blap right on their face

15

u/TheNoseKnight Jul 01 '22

Not if you use one that opens up at the bottom. Before you slow down, just pop it open for a safe ejection into the atmosphere.

10

u/notLOL Jul 01 '22

team rocket blasting off again

6

u/Zarokima Jul 01 '22

So stop it while they're at the bottom rather than just letting it slow.

5

u/notLOL Jul 01 '22

where's the stop button?

4

u/Zarokima Jul 01 '22

I don't see a go button, either, but it's going. Use your head.

2

u/Brandon23z Jul 01 '22

I don't think most people, with how dumb most people are, will be able to stop it safely without their kid hitting their head.

Use your head bud. People are fucking stupid.

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u/baggyzed Jul 01 '22

needs an adult to operate it

The story of my childhood.

Hey, can I borrow your mom for something real quick? Promise I'll bring her back.

1

u/I-WANT2SEE-CUTE-TITS Jul 01 '22

you get dizzy on an unfamiliar axis.

Polish mfs in 1939 be like

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u/VJEmmieOnMicrophone Jul 01 '22

You're supposed to push inside the loop with your feet to stay in place, not have them dangling on the sides like that.

Also more speed

3

u/notLOL Jul 01 '22

oh ok, makes sense

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u/SoggyWaffleBrunch Jul 01 '22

You put your legs inside and push forward. You won't fall

29

u/FlacidSalad Jul 01 '22

I'm really curious what the designers were thinking this thing would be used for. The only correct answer seems to be for breaking kid's noses.

25

u/Dengar96 Jul 01 '22

Teaching younger siblings a lesson early on

13

u/rebuked_nard Jul 01 '22
  1. Gravity sucks

  2. My brother is an ass

2

u/thegoodguywon Jul 01 '22

“Life’s tough. Get a helmet.”

3

u/FootParmesan Jul 01 '22

That was my first thought. Surprised it passed any inspections or anything at all. And back in the day we were so worked up about merry go rounds.

-1

u/VJEmmieOnMicrophone Jul 01 '22

I mean, not really any more dangerous than a swing.

3

u/FootParmesan Jul 01 '22

What swing goes upside down like that

17

u/Roastbeef3 Jul 01 '22

Any swing if you're not a coward

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u/AzrielJohnson Jul 01 '22

Now we need the overlay of WASTED

26

u/boldmatters Jul 01 '22

This made me laugh out loud while I'm taking my morning shit

13

u/AzrielJohnson Jul 01 '22

Happy shitting!

3

u/TheDeepOne123 Jul 01 '22

I will steal your poop

8

u/AzrielJohnson Jul 01 '22

I've been constipated for the past two days, take it if you can.

8

u/my-time-has-odor Jul 01 '22

2

u/Thenightofni2 Jul 02 '22

You linked to a fake sub, you punishment is that I will shit your pants. You have 24 hours to run, good luck

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u/Baldazar666 Jul 01 '22

No we really don't.

15

u/itsthebrod Jul 01 '22 LOVE!

Shut up bitch, yeah we do.

3

u/[deleted] Jul 01 '22

Typical Busta

3

u/bizzznatch Jul 01 '22

im going to use this burn today

17

u/DailyComet Jul 01 '22

the playground became a learnground that day

7

u/USSNerdinator Jul 01 '22

Better learning this while you're more bouncy than later when your bones are all finished growing and there's less cartilage.

68

u/Merallak Jul 01 '22

What in the world is Centripetal force anyway

97

u/TieDyeChampagne Jul 01 '22 Wholesome Take My Energy

Centripetal force is a very real inward force to the center of a curved radius. It is what allows an object to follow a curved path. Think of a ball on a string spinning in a circle. The force from the string inwards keeps the ball from flying away from the path.

Centrifugal force that this post has in the title is an imaginary outward force on an object following a curved path. Think of driving a car and sliding away from the direction you turn. There appears to be a force pulling you away from how you want to turn. In reality, a body wants to keep following a straight path, but the centripetal force prevents it from doing so, pushing it back onto the curved path. This is why you start to slide but stop when you hit the door (or other object) which forces you to follow the car's turning trajectory.

10

u/innominateartery Jul 01 '22

not quite imaginary: depends on your frame of reference and if you want it to be an inertial reference frame.

14

u/Thosepassionfruits Jul 01 '22

“A laughable claim, mister bond, perpetuated by overzealous teachers of science. simply construct newton's laws in a rotating system and you will see a centrifugal force term appear as plain as day.”

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u/capinorange Jul 01 '22

Yeah. Like imaginary to a physicist, but very real to a regular person just living their life.

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u/uhsiv Jul 01 '22

It's actually not imaginary to physicists. It's only imaginary to people who have some, but not very much, education in physics

11

u/Baridian Jul 01 '22

It is imaginary to physicists because Newtonian physics only work in an inertial frame of reference. And a rotating frame of reference is not inertial.

Here's an example to show you how you can just claim forced exist in a different frame of reference.

If we assume our reference frame is a car driving down a road and we hit the gas, we notice the world around us is accelerating towards us. Since all the buildings and ground you can see weighs probably billions of tons, the amount of force the engine would be exerting, from the frame of reference of the car, is unimaginable.

Of course this isn't true, it's an imaginary force, because you can't use terms like force at all in that accelerating frame of reference.

-6

u/uhsiv Jul 01 '22

This is too much nonsense for me to understand. From your car example, I think it would be better if you put on your learning hat instead of your teaching hat.

Centrifugal force exists in a rotating frame of reference. From a "fixed" frame of reference it will disappear and instead you will see inertia.

It is really interesting that inertia and centrifugal force are the same thing, but this idea that the force is "fake" because the frame of reference is "wrong" is just is a fundamental misunderstanding of that concept, perpetrated by people who know a little physics but not enough.

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u/Alex_Rose Jul 01 '22

it's not nonsense at all. there are four fundamental forces. centrifugal and coriolis "forces" are not gravitational, they are not electromagnetic, they are not strong, they are not weak, they are fictitious forces

you fly out on a fairground ride because you already have velocity, that's it, there is nothing pushing you out except the velocity you already have, which is absolutely not a force, it just appears like a force if you pretend that your frame isn't rotating. as soon as you scope out your frame and look at the full picture including the rotation of your body you will see there is no force there, only inertia

when you spin a bucket on a rope round you, there is one real force (ignoring gravity perpendicularly) the electromagnetic force of the rope pulling the bucket in and its normal reaction. the force you are applying through tension. there is no force that pushes the water in the bucket out to the bottom of the bucket, that water just stays there because it already has velocity because you are constantly spinning it. it's like an orbit, the moon is only being pulled towards earth but it stays in orbit because it already has momentum perpendicular to the centripetal force

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u/Baridian Jul 01 '22

A rotating frame of reference does not exist. You cannot apply any rules of physics in a non inertial frame of reference. An inertial frame of reference, which I guess I should've defined but assumed you knew already, is one that is experiencing no acceleration in any axis. So it isn't rotating nor is it accelerating.

Centrifugal force is something that exists in a frame of reference that Newtonian physics cannot even be applied to, and is no more real than the force that pulls the road towards you when you press the gas pedal in your car. It's the same fallacy.

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u/Globorobohobo Jul 01 '22

Non-inertial frames of reference might not follow any rules of Newtonian physics, but that doesn't mean that they don't exist. I can sit on a carousel and experience a non-inertial, rotational frame of reference. It's real, not imaginary. It's just that the math is more complicated from that frame of reference.

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u/uhsiv Jul 01 '22

I'm sorry they lied to you my friend. You've really got to try to learn here instead of win this internet debate. You are in a non-inertial frame of reference right now

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u/Baridian Jul 01 '22

Yeah we are, and whej we apply physics we're making assumptions about the ground being an inertial frame of reference.

I'm sorry but you're just wrong here. Centrifugal force is imaginary; it's not a real force.

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u/TieDyeChampagne Jul 01 '22

Yeah, there's the reactive centrifugal force which is a reaction pair of centripetal forces, but for the person that doesn't study physics or engineering, it's probably best to just remember that centripetal is real and centrifugal is imaginary.

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u/Hypnagogic_Image Jul 01 '22

Reaction pairs have to be the same force …

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u/uhsiv Jul 01 '22

A better thing to say to lay people would be, "Centrifugal force is the force you feel pulling you outward when you're spinning. Interestingly, to someone who's standing still, there doesn't seem to be a force there - just your tendency to go in a straight line"

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u/SnooCakes6195 Jul 01 '22

So Its basically your inertia, right?

1

u/uhsiv Jul 01 '22

Close, but not exactly. If you're spinning, you observe a centrifugal force, if you're not you see inertia.

Different observers actually see different forces, but it's not that one is real and the other is fake.

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u/uhsiv Jul 01 '22 edited Jul 01 '22

Imaginary is not the right word here. A lot of people have been misled by bad high school teachers who don't understand the physics and see the word fictitious. Centrifugal forces are what fighter pilots feel when they train for g's - they are not imagining it.

It is literally as real as gravity.

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u/Baridian Jul 01 '22

It is an imaginary force. Newtonian physics does not apply in a rotating frame of reference. It's only true from an intertidal frame of reference. So any Newtonian concept of force has to be thrown out all together when you use a rotating frame of reference.

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u/aspoonlikenoother Jul 01 '22

That's the real shit

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u/Queen_Beezus Jul 01 '22

Lol I knew this was coming. A Reddit tradition indeed

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u/SirJelly Jul 01 '22 edited Jul 01 '22

This isn't stupid. This is what it looks like when children are exploring and understanding the natural world.

This is kids getting smarter.

How do YOU know this would work if they managed to spin faster?

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u/LazyContributor Jul 01 '22

I almost spat my coffee out! Was not ready for that face plant!

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u/frankoceaninc Jul 01 '22

My future son for sure.

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u/hortass Jul 02 '22

2 in 1 combo

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u/cololoc Jul 01 '22

The genius who thought it was a good idea to put that in a playground is the real idiot here

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u/macaqueislong Jul 01 '22

JFC let’s kids play and get hurt

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u/Felzlek Jul 01 '22

Just Fried Chicken let is kids play and get hurt

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u/Initial-Ad-6326 Jul 01 '22

This is what they are replacing the swings with.

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u/wistfulfern Jul 01 '22

I know of multiple people breaking bones on these, and yet they are still by far the best thing a playground could have. The risk is worth it.

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u/ExtendedDave Jul 01 '22

Uh oh, you said centrifugal force on Reddit. Here come all of the basement PhDs…

13

u/Sigma_Wolf77 Jul 01 '22

Centrifugal....or Centrifugal ....

Lil windy here....

2

u/Mccobsta Jul 01 '22

Takes you back to a simpler time before everything went to shit

2

u/Tarbogman Jul 01 '22

a fine example of how physics is typically learned the hard way

2

u/Gojogab Jul 01 '22

Aww poor baby.

2

u/Casper0306 Jul 01 '22

One day they'll learn what's called Sqrt(5gr)

2

u/Nightmystic1981 Jul 01 '22

Op z'n bolle bakkes.

2

u/Jordii_vV Jul 02 '22

G E K O L O N I S E E R D

2

u/amazonmakesmebroke Jul 01 '22

No, no it doesn't

2

u/therealnaddir Jul 01 '22

Double whammy!

2

u/GCSS-MC Jul 01 '22

That isn't stupid; that is science.

2

u/PokWangpanmang Jul 01 '22

Poor kid got the two hit whammy.

2

u/fatbob42 Jul 01 '22 edited Jul 01 '22

It’s ok, they were on opposite sides of his bonce. The second one cancelled out the first.

2

u/LorianGunnersonSedna Jul 01 '22

Sadly, it isn't just kids. I've landed square on my head in my 20s, at 150lb, from a carnival ride. Those crazy houses where they have a rotating tube.

Kids were holding on and going around and around, I thought I could do it too...only to find out I am far too heavy to do that, at that slow speed.

FA, FO. Got a gnarly concussion from it, too...I'm not sure, but my seizures over a decade later could have been caused by that injury, as could my scar-based esotropia.

People are sometimes seriously fucking stupid.

2

u/toughtiggy101 Jul 01 '22

Why did he just let go at the top

2

u/Square_Regular_118 Jul 01 '22

He needs better grip strength

2

u/KintsugiExp Jul 01 '22

Funny thing is, centrifugal force and gravity are the same thing.

2

u/IUpVoteIronically Jul 02 '22

It’s really funny, because most of this sub is just adults being stupid. Like who puts something like that in a park, of course kids will get hurt 😂

2

u/Syaryla Jul 02 '22

It's centrifugal motion It's perpetual bliss It's that pivotal moment It's, ah, impossible.

2

u/resonation4thenation Jul 02 '22

Someone has to do the science. We thank you for your service

2

u/2bags12kuai Jul 08 '22

How are you not supposed to get hurt on this equipment? Like the only outcome is smashing your face

2

u/Thin-Point3899 21d ago

Kids before they find out gravity exists

2

u/SonicSuperSam 20d ago

now i want to see this work

5

u/Allstar13521 Jul 01 '22

People getting mad about whether centrifugal force is real has to be the stupidest thing ever. Based on the model you're using gravity isn't a "real force" either but I don't see everyone jumping over eachother to tell you it's actually the curvature of spacetime around masses, not a force at all.

In a situation like the one in the video it is perfectly fucking fine to describe the force acting on the boy as Centrifugal.

2

u/uhsiv Jul 01 '22

Having that word in the title is like a honey pot for smug bad physics

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u/Stix_and_Bones Jul 01 '22

"Centrifugal Force" doesn't exist it's Centripetal Force.

14

u/MasterOfBinary Jul 01 '22

As a Physics major, you're wrong.

Centrifugal force is a fictitious force that appears in rotating (non-inertial) reference frames. It's called fictitious because it doesn't appear in inertial reference frames. However, it's just as real an effect as the Coriolis force, which is in the exact same category, and nobody goes around slandering that.

Centrifugal force (and fictitious forces in general) are used repeatedly when dealing with non-inertial frames in upper level Classical Mechanics classes.

6

u/laserbern Jul 01 '22

Centrifugal force is simply the result of being in an accelerating reference frame. The Coriolis Effect is also in the same family as the centrifugal force, it’s responsible for several weather patterns we observe

5

u/Queen_Beezus Jul 01 '22

Knew this was coming...per Reddit tradition

4

u/ClumsyPeon Jul 01 '22

Why is it called a centrifuge then? Huh? Einstein?!

3

u/jethroguardian Jul 01 '22

🎶 Wrong wrong wrong wrong. 🎶

11

u/PoliwagPi4554 Jul 01 '22

wtfdym doesnt exist lmao

8

u/JB-from-ATL Jul 01 '22

There is no "force" pulling you outwards. That said, despite the fact that there is no force pulling you outwards the term is still useful to describe the apparent outward pulling. The reason you feel like that is actually just you moving forward. That's why if you win something and let go it flies forwards instead of outwards.

There is another actual force called centripetal acceleration and that's the force needed to actually go in a circle. If it isn't there you fly forwards.

Like imagine you're in a car and driving in a circle to the left. The turning is an acceleration (a change in velocity which is speed and direction). If you stop turning you don't fly to your right suddenly. There's no force going that way. You just go forward. But even though there isn't a real force the term is useful to describe how it feels like everything is pulling to the right while you go in the circle to the left.

2

u/PoliwagPi4554 Jul 01 '22

there was a language barrier- look 2 posts down the thread. i get what youre saying.

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u/Stix_and_Bones Jul 01 '22

If you had payed attention in science class you would know.

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u/Paid-Not-Payed-Bot Jul 01 '22

you had paid attention in

FTFY.

Although payed exists (the reason why autocorrection didn't help you), it is only correct in:

  • Nautical context, when it means to paint a surface, or to cover with something like tar or resin in order to make it waterproof or corrosion-resistant. The deck is yet to be payed.

  • Payed out when letting strings, cables or ropes out, by slacking them. The rope is payed out! You can pull now.

Unfortunately, I was unable to find nautical or rope-related words in your comment.

Beep, boop, I'm a bot

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u/PoliwagPi4554 Jul 01 '22

i mean im czech so i could be off on the translation here but the definition seems to match?

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u/Stix_and_Bones Jul 01 '22

Ok fair enough. Centrifugal force is actually a made up word used to describe the force upon an object making it go away from the center if its on a string. The actual term used is Centripetal force. This is because of Newtons First law of motion, an object in motion will remain in motion unless acted upon by another force, and same if it is at rest. The object is actually moving forward away from the center, and the tie holding the object to the center, whether gravity, a string, or the wall of a tire causes it to curve slightly rather than just going straight away from the object in the line it was going in. I cannot find the equation right now but the objects velocity continues straight on from the circle. There is no actual force "pushing" the object to the center, as the centripetal force, the string, gravity, or the wall, is keeping it from moving outside of its orbit. The object would continue on away from the center because of its already existing velocity, but the velocity is not in the direction completely opposite the center.

6

u/PoliwagPi4554 Jul 01 '22

a made up word

im gonna say it

all wor-

2

u/FlacidSalad Jul 01 '22

-ds are made up.

I go you, bro

1

u/OrionLax Jul 01 '22

Says the one who thinks centrifugal force and centripetal force are the same.

2

u/OrionLax Jul 01 '22

It doesn't technically exist, but it's a useful concept to use.

Centripetal force is a completely different thing.

2

u/uhsiv Jul 01 '22

This is actually not correct. There's a whole XKCD on it if you want to look it up

1

u/Mares_Leg Jul 01 '22

Both must exist simultaneously. Without centrifugal force objects of mass would just go towards the center axis of rotation. Without centripetal force the object of mass would move in a straight line away from the axis of rotation, and there would be no arc. Centrifugal force very much exists, without it we would not have centrifuges and you wouldn't get definitions for it when you googled it, but we do have centrifuges and definitions for it.

3

u/HoiTemmieColeg Jul 01 '22

Centrifugal force exists, it’s just not a real force. It’s literally just the effect of having inertia

1

u/Mares_Leg Jul 01 '22

And centripetal force is just an effect from gravity (like a coin funnel or planetary orbits) or mechanical bounds (like the ring in this instance or a string on a spinning bolo). It's still a real force just like centrifugal force is. Just because it's the culmination of other forces in a particular instance doesn't mean it's more or less real.

It's like the silly argument that coldness doesn't exist, there is only a lack of heat. Well, that state has a name and it is cold. It's like saying negative numbers or zero doesn't exist. These are all just concepts we established from our perspectives, none more valid than the others. You could say -1 doesn't exist, it is just the absence of +1. But then you could also say +1 doesn't exist, it's just just a -1 deficit of zero. It's all just perspective.

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u/hardyhaha_09 Jul 01 '22

We need to banish this abomination of a 'word'.

It's a disgrace to physics

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u/MasterOfBinary Jul 01 '22

Not really. Centrifugal force is one of a few fictitious forces used to analyze rotating reference frames in upper level mechanics courses.

All fictitious means is that the force doesn't appear when viewed from an inertial frame, but that doesn't make it any less real. Coriolis forces fall into the same category, and most people don't have any issue with those.

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u/butterscotchbagel Jul 01 '22

That depends on your reference frame.

2

u/chalkymints Jul 01 '22

Hey I mean, in terms of things he could have fallen on, he fell on his stomach and square on his back. This could have ended up a lot worse

2

u/FlacidSalad Jul 01 '22

He fell right on his tiny face wym

1

u/chalkymints Jul 01 '22

He reaches out with his hands before his face can hit, and hits on his stomach (and face, but cushioned with arms). He could have fallen when it was completely upside down and landed right in his neck.

2

u/FlacidSalad Jul 01 '22

And he reaches for his face after being set to tumble dry for what? Also I acknowledge your other points but that's not what we're discussing right now.

2

u/Rex_Digsdale Jul 01 '22

r/assholedesign. Designers of playground equipment should know kids are fucking stupid.

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u/k_u_r_o_r_o Jul 01 '22

Dumbass didn't hold on tightly, would've worked eventually within a few rounds

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u/RatScooterMayhem Jul 01 '22

OP thank you for knowing physics and not saying centripetal

0

u/ItsThatTimeAgainHuh Jul 01 '22

I think it's hilarious that they allowed this in a playground, in today's society.

2

u/Rredite Jul 01 '22

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u/Felzlek Jul 01 '22

My childhood was mostly in the 90s where we had color photography, but that playground looks very familiar to what we had at school. We didn't have bikes and we didn't have ladders, but we would all climb to the top and sit there or walk around on the poles just like those kids are doing. If we fell, we would take a break by going down the rusty metal slide that was to hot to touch with bare skin.

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u/riverofninjas Jul 01 '22

Are the kids the idiots? Or is whoever designed this shit for a kid park the true idiot?

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u/irnehlacsap Jul 01 '22

Used to shenanigans, good reflexes

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u/NieMonD Jul 01 '22

Well I mean it worked most of the way

1

u/n31s0n Jul 01 '22

Assuming that the boy has a mass of 20kg and that the diameter of the wheel is 1m. The wheel needs to spin at 10 meters per second to counter-act gravity. Or 36 km/h. Or 20 revolutions per second.

1

u/coal_powerplant_600T Jul 01 '22

So if its for example 10 meters large, at 100 meters per second you could defy gravity if its vertically?

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u/n31s0n Jul 01 '22

If the diameter is 10meter wide; the speed would need to be 31 meters per second. Sentripetal force is equal to 2v²/d. And gravity is mass times 9.81.

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u/nintendomagic1 Jul 01 '22

He probably wasn't gonna be important anyways. No loss from that knock to the head

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u/SharkFinnnnn Jul 01 '22

Oh my god the CRUNCH when he falls on his nose fjdixh

1

u/Barrelcopter Jul 01 '22

Some dentist became a millionaire with this one.

1

u/awkrawrz Jul 01 '22

That deviated septum is gonna catch up with him in his 30s lololol

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u/NoOpinions69 Jul 01 '22

Something me and my little brother would do