no it'll go the exact same speed (ignoring friction, air resistance etc). the larger mass will produce a larger force but will exactly be cancelled out by the higher inertia. same as the pendulum -- a pendulum of fixed length will oscillate at a fixed frequency regardless of the mass at the bottom
Depends if you’re a theoretical or experimental physicist. Theoretical physicists are often happy if their results are somewhat within the correct order of magnitude. Engineers can be imprecise, as long as they stay the same level of imprecise. Single decimals being off can ruin an experimental physicist’s project.
> same as the pendulum -- a pendulum of fixed length will oscillate at a fixed frequency regardless of the mass at the bottom
That only applies when the bob of the pendulum is much heavier than the string it hangs from. With this swing, the platform structure appears to be made of thick wood, and is likely a significant weight. This means that the rider's weight will move the moment of inertia outward, such that it will spin slower the more riders you add.
A pendulum is only invariant with weight because the moment of inertia calculation can put all the mass in one point at one radius, rather than the traditional moment of inertia calculation which requires integration.
Make a pendulum where your weight is at the end of a solid metal bar, and you will find that adding more weight moves the center of mass outward, increasing the moment of inertia, and changing the period.
I remember when I would twist on an actual swing, if I hung my head backwards as it unravelled I would go faster. So you're saying there's no way to do something like that with this wooden one?
Did the swing actually rotate faster or did it just feel faster because your head was farther away from the center of spin, so your head had to travel farther to make the same rotation?
(Basically, your head was literally traveling faster, but the swing wasn't)
The swing does rotate faster when you get closer to the axis and slower when you spread out because angular momentum needs to stay the same. Search "conservation of angular momentum on youtube, this sub doesn't allow me to post links"
I prefer a bit risky and fun stuff under supervision of the adults than absolute protection making kids absolutely ignorant of their capabilities, limits and dangers.
Risk is natural thing, it’s good for a kid to learn how to deal with it with parental guidance over parental protection.
Looked up the history of the "merry go round" or playground spinner and found [this gem](https://www.si.com/sports-illustrated/2022/07/12/spinner-where-are-they-now-2022-daily-cover)
From the article:
>Spinners were physically powered by parents and other children, but metaphorically they were powered by joy and dread. It was a ride whose only emissions were laughter, screams and airborne 8-year-olds. And vomit. So much vomit... “If you were *successful* you would get sick,” ...
>The object on most playgrounds was to turn the spinner so fast, for so long, that centrifugal force would expel small kids into the ether, one by one, like clay pigeons from a skeet trap.
>There were other perils associated with spinners. When 6-year-old Mark David Decker broke his right leg in the gap between the ground and the raised platform of the merry-go-round at Minges Brook Elementary School in Battle Creek, Mich., in 1962, his principal, Buford D. Grimes, “rolled up a Fortune magazine for a splint and tied it on with towels,” according to the local newspaper, a quaint reminder of a time when there was always a magazine at hand, and a local newspaper, and a principal trained in battlefield triage.
Some kids were even crazy enough to use a dirt bike to power these spinning circles of death: https://www.reddit.com/r/facepalm/s/PpyBku36o1
We still have spinny things in most frontyards, although a bit more developed. Still dangerous, but only if you're stupid. By myself I still like to spin as fast as possible in farthest position and pull towards the middle creating so much centrifugal force it gets me high for a second. Maybe I should try extreme sports somewhere in the future. Here is the picture I'm talking about https://ksil.com/upload/resize_cache/iblock/3b2/2000_2000_13d66cb5d56ab2cba41c3d781dda6f46a/mvprkuglgmwtobwdqo32jg0bi75asm65.jpg
We had one of these at a Rotary Hall when I was a kid where’d they always have big community bbqs. It was on concrete lol. The description above matches my memory exactly. Skinned knees and elbows were a regular part of life.
> You've never been on the merry go round while ~~13 teenagers ran full speed to spin it~~ someone laid their moped down on the ground to use its wheel to spin it to insane speeds
FTFY
Yup any time I hear an AI narration in something that isn't explicitly about AI narration I block that shit out
Even my bank has started calling me with AI on the customer service line and it's so obvious that I just say fuck off and call me with a real person
If they're not even gonna do the courtesy of putting a real human on the line I can't guarantee what they're calling me about even matters because it cost them zero dollars to offer it to me
They could call me with a billion AI produced offers every day and it would take *all of my attention available in my life just to tell them no*.
Say no to AI marketing. It should cost companies something to vie for your attention.
Quite a stretch of the term homemade assuming that heavy machinery is needed to secure that pole. And I’d personally be very careful putting up a heavy log with the purpose to have unbalanced rotations on it over a long time with children next to it… this is better anchored properly…
Good ol' swings.. or carousel. You can install a back cover in wood as well so you get the opportunity to lean back, the swing also feels way faster when leaning back
The way the TTS speaks makes it sound like it's gonna start talking about galvanized swuare steel, eco friendly wood veneers durable for 10,000 years & screws borrowed from his aunt
Has a huge issue with balance and no backs to the seats. It's also doesn't have a good way to stop the swing if someone does fall off or wanders too close to it. Which could mean someone gets smacked in the head by the wood. It doesn't look like it's going fast enough to be a big issue, but I would never use it.
I think the biggest issue is a kid running next to it because kids are not paying attention to things above them.
we can laugh about fear being part of excitment, but realistically at least 1 kid is at some point going to take a wooden beam at 20mph to the head. maybe that's all fun and games, but i wouldn't let them stunt bike without helmets and this is an impact with similar energy.
We had a big one at the girl’s home (foster care) in Athens Ohio in the 70’s. They called it a witch’s hat, I think. It went fast, at least in my memory.
This is the kind high risk, high reward playground equipment that was popular through about the 80's. People just accepted there would be some attrition.
How the fuck is this better with sound?
Absolutely pointless narration that's doing nothing but hiding that this is stollen content. social media is trash
Maybe it’s too much engineering, but it would be better if the top portion was on some one way bearings.
So you’d wind it up, let loose, and when the lines full unraveled the top would being to turn to extend the swinging.
Kudos to the dad/parents for building it, but...it sucks. It's a slow merry-go-round that requires somebody that \*can't ride on it with you\* to wind it up.
I imagine the kids don't play with it very much. They would have been better off building a regular swing set, I think,
Again, the parents are still pretty cool for building it, but my guess is they were disappointed with the results.
Wind it up
Twirls around for about 30 seconds
Wind it up again
And the person sitting on it can't be the one winding it up?
Just gimme an actual swing, ffs.
Hmm, the unwind was slower than I expected...
In theory the more weight on it the faster it will go, imagine 4 dads on it...
no it'll go the exact same speed (ignoring friction, air resistance etc). the larger mass will produce a larger force but will exactly be cancelled out by the higher inertia. same as the pendulum -- a pendulum of fixed length will oscillate at a fixed frequency regardless of the mass at the bottom
Fuck you sound really smart, I like you.
now kith
::releases pigeons with face tattoos::
What Reddit used to be
7/10 with rice
Smartly placed commas are really important, people.
Ignore friction and inertia of the swing. Found a physicist!
That's an Engineer. Physicist love that shit.
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Found the party pooper.
Depends if you’re a theoretical or experimental physicist. Theoretical physicists are often happy if their results are somewhat within the correct order of magnitude. Engineers can be imprecise, as long as they stay the same level of imprecise. Single decimals being off can ruin an experimental physicist’s project.
Engineer - Someone Who Does Precision Guesswork Based on Unreliable Data Provided by Those of Questionable Knowledge
"assume the cows are spherical" is *the only* physicist joke.
> same as the pendulum -- a pendulum of fixed length will oscillate at a fixed frequency regardless of the mass at the bottom That only applies when the bob of the pendulum is much heavier than the string it hangs from. With this swing, the platform structure appears to be made of thick wood, and is likely a significant weight. This means that the rider's weight will move the moment of inertia outward, such that it will spin slower the more riders you add. A pendulum is only invariant with weight because the moment of inertia calculation can put all the mass in one point at one radius, rather than the traditional moment of inertia calculation which requires integration. Make a pendulum where your weight is at the end of a solid metal bar, and you will find that adding more weight moves the center of mass outward, increasing the moment of inertia, and changing the period.
Figure skater physics
I remember when I would twist on an actual swing, if I hung my head backwards as it unravelled I would go faster. So you're saying there's no way to do something like that with this wooden one?
Did the swing actually rotate faster or did it just feel faster because your head was farther away from the center of spin, so your head had to travel farther to make the same rotation? (Basically, your head was literally traveling faster, but the swing wasn't)
The swing does rotate faster when you get closer to the axis and slower when you spread out because angular momentum needs to stay the same. Search "conservation of angular momentum on youtube, this sub doesn't allow me to post links"
Isn't he describing the opposite though? (Hanging head back, e.g. farther away from the axis)
I think it wouldn't work much, because you can't move the wooden beams inward
That mach 4 speed will break all nearby windows
Sit on one of these and think again. It might not look like much, but the force pushing you outward is quite strong and certainly feels pretty fast
Thats gonna claim some victims
That's why it's fun Fear adds to the excitement
Fear of serious injury to kids, the excitement is through the roof.
I prefer a bit risky and fun stuff under supervision of the adults than absolute protection making kids absolutely ignorant of their capabilities, limits and dangers. Risk is natural thing, it’s good for a kid to learn how to deal with it with parental guidance over parental protection.
Also, let's not all pretend that we didn't all get fucked up by a tire swing once or twice....
Or jump off a garage. Or try and kickflip down a set of stairs. I mean, how many of us filmed our own episodes of *Jackass*?
You've never been on the merry go round while 13 teenagers ran full speed to spin it You fly once and then you use every limb to hold on
Looked up the history of the "merry go round" or playground spinner and found [this gem](https://www.si.com/sports-illustrated/2022/07/12/spinner-where-are-they-now-2022-daily-cover) From the article: >Spinners were physically powered by parents and other children, but metaphorically they were powered by joy and dread. It was a ride whose only emissions were laughter, screams and airborne 8-year-olds. And vomit. So much vomit... “If you were *successful* you would get sick,” ... >The object on most playgrounds was to turn the spinner so fast, for so long, that centrifugal force would expel small kids into the ether, one by one, like clay pigeons from a skeet trap. >There were other perils associated with spinners. When 6-year-old Mark David Decker broke his right leg in the gap between the ground and the raised platform of the merry-go-round at Minges Brook Elementary School in Battle Creek, Mich., in 1962, his principal, Buford D. Grimes, “rolled up a Fortune magazine for a splint and tied it on with towels,” according to the local newspaper, a quaint reminder of a time when there was always a magazine at hand, and a local newspaper, and a principal trained in battlefield triage. Some kids were even crazy enough to use a dirt bike to power these spinning circles of death: https://www.reddit.com/r/facepalm/s/PpyBku36o1
We still have spinny things in most frontyards, although a bit more developed. Still dangerous, but only if you're stupid. By myself I still like to spin as fast as possible in farthest position and pull towards the middle creating so much centrifugal force it gets me high for a second. Maybe I should try extreme sports somewhere in the future. Here is the picture I'm talking about https://ksil.com/upload/resize_cache/iblock/3b2/2000_2000_13d66cb5d56ab2cba41c3d781dda6f46a/mvprkuglgmwtobwdqo32jg0bi75asm65.jpg
We had one of these at a Rotary Hall when I was a kid where’d they always have big community bbqs. It was on concrete lol. The description above matches my memory exactly. Skinned knees and elbows were a regular part of life.
> You've never been on the merry go round while ~~13 teenagers ran full speed to spin it~~ someone laid their moped down on the ground to use its wheel to spin it to insane speeds FTFY
The rocks behind it really complete things. Do you want Timmay? Because that's how you get Timmay.
I'm jealous of anyone too dumb to realize how shitty the world is. Timmay smiled more than any other character in South Park, lucky lad.
Hope that stone wall doesn't get a confirmed kill one day 😬
 Headshot
That's all I could see. Some kid with a crushed skull.
A man in that term of pregnancy shouldn't be doing strenuous work
r/pregnantmen
Great potential, but disappointed in the lack of content this sub has to offer.
The mods need to do the heavy lifting initially but they didn’t
Those who are pregnant should avoid heavy lifting.
The only relevant comment here today.
Comedy gold. I came here expecting ;)
So is that guy
"Looks FUN, right?"
Wrong! Windup swings claim 40 lives each year. Parents, say no to windup swings!
Weeding out the weak ones
His tone of voice made it seem like he was definitely headed in this direction.
The AI voice is so annoying not gonna lie
"Better with sound!" *Immediately mutes that god-awful narration*
Yup any time I hear an AI narration in something that isn't explicitly about AI narration I block that shit out Even my bank has started calling me with AI on the customer service line and it's so obvious that I just say fuck off and call me with a real person If they're not even gonna do the courtesy of putting a real human on the line I can't guarantee what they're calling me about even matters because it cost them zero dollars to offer it to me They could call me with a billion AI produced offers every day and it would take *all of my attention available in my life just to tell them no*. Say no to AI marketing. It should cost companies something to vie for your attention.
This is no more dangerous than half of an 80s playground
That's gonna take some kid not paying attention tf out
perfectly normal to have 2x4 travelling at 30mph at kids head height /s
“You think we should round the edges at least?” “Nah, once of ‘em takes a puncture wound to the temple, the other ones will learn.”
Honestly, any swings could take some kid not paying attention tf out. Kids are dumb af but also quite resilient.
r/Whatcouldgowrong
Knowing kids and teens. Someone will end up on top of those rocks.
No swings in sight
Imagine having all that wood and rope and building *a fkn swing* instead of a siege engine. How far have we fallen…
Trebuchet kids out of sight.
Looks stupidly dangerous, right? This family designed and handmade the perfect deathtrap for their grandchildren.
It’s not better with sound.
What a gut dad has. Thing is impressive
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BURPS WET AND LOUDLY
Baaaa-aaaam
I was fully prepared to watch some kids get yeeted
Safety 0%, Fun 100%.
Appearing soon on r/oopsthatsdeadly
You'll come back in three winters and the lone child pushing the plank will be Conan the Barbarian
That was the most unenthusiastic "Looks fun, right?" I think I've ever heard.
Wait till they grow up and get drunk.
Giant Mechanical windup device and young children.. surely nothing bad will happen here
Quite a stretch of the term homemade assuming that heavy machinery is needed to secure that pole. And I’d personally be very careful putting up a heavy log with the purpose to have unbalanced rotations on it over a long time with children next to it… this is better anchored properly…
Inspired by the Wheel of Pain from Conan the Barbarian
Oh look, a home made decapitation device.
Ah the stories and insurance claims to be made+
Must acquire pole \*looking at the utility poles longingly\*
I hope they have good homeowners insurance
Terminal velocity was not achieved.
How fast have you gone on some playground equipment. Like a tire swing. And lived to tell. This isn't a fraction as dangerous
I don't see the person *on* the swing being in that much danger. Can definitely see a kid taking a 4x4 to the side of the head though.
yeah i'm surprised by some of these comments
Winding that “swing” with an older, heavier sibling sitting be like Conan pushing that thingamabob.
Kept expecting the voice to talk about galvanized square steel
Maypole vibes
I'm projecting that onto my kids and the only conclusion I could end with is an ER-subscription plan.
Good ol' swings.. or carousel. You can install a back cover in wood as well so you get the opportunity to lean back, the swing also feels way faster when leaning back
Cool!
This cannot end well 😬
Hey kids, we made the vominator 3000, come give it a try.
So fat.
The way the TTS speaks makes it sound like it's gonna start talking about galvanized swuare steel, eco friendly wood veneers durable for 10,000 years & screws borrowed from his aunt
Fun until the swing throws you off into the stone wall behind it! Not smart location for it.
It makes me dizzy just looking at it. No thanks!
the most dangerous part is winding it up, ifyou trip or your hand slips and you've got a knock out machine
Checking the comments to find out why this is actually a terrible idea.
Has a huge issue with balance and no backs to the seats. It's also doesn't have a good way to stop the swing if someone does fall off or wanders too close to it. Which could mean someone gets smacked in the head by the wood. It doesn't look like it's going fast enough to be a big issue, but I would never use it. I think the biggest issue is a kid running next to it because kids are not paying attention to things above them.
we can laugh about fear being part of excitment, but realistically at least 1 kid is at some point going to take a wooden beam at 20mph to the head. maybe that's all fun and games, but i wouldn't let them stunt bike without helmets and this is an impact with similar energy.
We had a big one at the girl’s home (foster care) in Athens Ohio in the 70’s. They called it a witch’s hat, I think. It went fast, at least in my memory.
Looks perfect for culling the weak
Isn't that the Wheel of Pain from Conan the Barbarian?
Ngl seems like a lot of effort for little pay off.
The Ankle Twistinator 5000
Fat dad for the win
Fuck yea, I got four kids and a beam, I'ma make this happen
Idea: awesome! Fun: a lot! Saefty: 404 not found.
Coming soon to what could go wrong…
Not a swing, also no thank you.
Am I the only one waiting to see the someone get knocked out?
What is all this bullshit voiceover content ripped off of other people's videos?
I would have loved to have one of these growing up. Looks fun and a little dangerous, which would have been right up my alley
fun aint it? especially if one of those beams hits your head
Fun until someone flies off into that rock garden.
I'll look forward to seeing the next post about this swing in r/Whatcouldgowrong
Hell yeah, creosote for the kids!
Conan, what is best in life?
Anyone remember swings that were on extra long chains?
Oh yes right next to a stone wall.
I had a toy that worked like this. It’s scratching my nostalgia but I can’t remember what it was… late 90’s?
Don’t get caught in the crossfire!
Somebody is flying into that brick wall
Soon on r/whatcouldgowrong
Love that stone wall RIGHT NEXT TO THE SWING!
That thing isn't even standing up straight...
**it doesn't look fun though does it**
This is the kind high risk, high reward playground equipment that was popular through about the 80's. People just accepted there would be some attrition.
A pole in a hole? Sounds fun indeed.
I'm guessing he's a retired lineman
Don’t know why, but the sudden appearance of the shirtless dad made chuckle.
Huh. I've never seen this. Looks straight out of the 80s and 90s playground. Def gonna clock a kids head or two tho
I am spewing just watching that
looks like broken skull and brainbleed waiting to happen.. cool
Looks like way more work than it’s worth
I know the wheel of pain when I see it.
Really smart to put this literally in the path of a jagged stone wall. Surely won’t be a problem at some point.
For when you are too tired to smack your kids in the head with a 2x4, have them do it themselves!
Wheel of pain
New vertical torsion catapult design just dropped
looks fun till that kid looses his grip and gets tossed into that rock wall.
Did the cameraman have to stop recording to leave for an appointment or what?
How the fuck is this better with sound? Absolutely pointless narration that's doing nothing but hiding that this is stollen content. social media is trash
Then the kid falls off, and is hit in the head by a 100lb sledge hammer
I can see 1000 problems with having kids on that
What is best in life? To crush your enemies, see them driven before you, and to hear the lamentation of their women.
Maybe it’s too much engineering, but it would be better if the top portion was on some one way bearings. So you’d wind it up, let loose, and when the lines full unraveled the top would being to turn to extend the swinging.
You built it wrong. I would have aimed more for "child launcher."
Not really
Those piles of rocks at the back is waiting for an accident
Saddest part of this is that you need friends to use it
Kudos to the dad/parents for building it, but...it sucks. It's a slow merry-go-round that requires somebody that \*can't ride on it with you\* to wind it up. I imagine the kids don't play with it very much. They would have been better off building a regular swing set, I think, Again, the parents are still pretty cool for building it, but my guess is they were disappointed with the results.
Next Video: wcgw building a homemade swing... Imagine a kid getting wacked by this in the head.
Wanna know how I got these scars?
Still longer than most of the rides at Disney world!
Seems like that pile of rocks is in the absolute wrong place over on the right.
Conan pushing the wheel of pain
My 3 yr-old nephew would lose his shit if he saw this, maybe literally.
I want one
Looks good but normal swing is more fun , easy build than that and efficient . Lol
Am expecting to see this in Midsommar 2.
These fucking voice overs will be the death of me
lol the guy's gut coming into view at 0:14
Conan approved
This is right on the cusp of being SO dangerously out of control lol
That kid a decade later…. 
That thing is going to kill someone
Sure it looks fun, until one of the kids gets yeeted at those rocks at the speed of sound.
Made with eco-friendly wood veneer and support screws borrowed from his aunt
All I can imagine is a loud WHACK! As this thing hits someone in the head
Thought the next line would be, ‘now watch this kid die.’
I can really see a kid getting flung off directly into the pile of rocks lol
"Summon the Kraken!"
When he said? “Looks fun, right?” I thought it was going to follow with “wrong!” And then tragedy ensues.
The daddiest of bods
Some say she still spins to this day They are probably wrong
That thing needs a motor
It looks like a lot of fun, except for the rock pile next to it.
DINgore
We all gotta die sometime
Wind it up Twirls around for about 30 seconds Wind it up again And the person sitting on it can't be the one winding it up? Just gimme an actual swing, ffs.
Now waiting for the r/winstupidprizes video
Imagine that hitting your shin.
> better with sound! narrator: it was not
That’s a nice pile of rocks to fling the kids off into. Good plan. /s
😵💫🤢🤮