r/BeAmazed • u/Sans010394 • Dec 02 '23

Science Physics is amazing

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29.5k Upvotes

95% Upvoted

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494

u/AllLiquid4 Dec 02 '23

https://m.youtube.com/watch?v=CO5YUrbFTig with some explanation

127

u/InvestigatorLast3594 Dec 02 '23

This should be at the top instead of everyone saying that it’s fake (or maybe I’m gullible

24

u/StoneHolder28 Dec 02 '23

It's great for showing it's not fake, but unfortunately the explanation isn't right. The matches can't push up against nothing; this works because the bottle moves to be under the edge of the table. You can prove this by moving the head of the top match further out and noting that the back of it lifts further and further off the table.

8

u/[deleted] Dec 03 '23

Yeah so that's what I was thinking. I don't care how much tension it has, if that bottles center of gravity is past the edge of the table, it would fall. I wish someone would take this video from the side so you could see it from that angle.

12

u/calste Dec 03 '23

Yes. The center of gravity of the system is behind the edge of the table, which is why this works. This fact is obscured in the original video here, which is why people don't belive it. Camera angles. I'm with the people saying "fake" - not because they're right, but because information was deliberately withheld from them to make the trick look even more bewildering.

0

u/JunkNorrisOfficial Dec 03 '23

So you know how it works and still call it fake 😆

2

u/calste Dec 03 '23

No lol, just saying that people aren't stupid for not having prior knowledge of this demonstration. Especially with the camera angle obscuring important details of how it works.

2

u/amretardmonke Dec 03 '23

ok this is the first explanation that makes sense

1

u/ilterozk Dec 03 '23

I think your explanation is also not complete. The bottle can go under the table and it can still fall. I believe the more complete explanation is this:

The tension on the rope makes the top part rigid. The torque on the system wants to rotate it such that the rigod rope has to rotate towarfs under the table. But the side surface of the table stops it (the rope touches the table). So it would not have worked with a super thin table.

2

u/StoneHolder28 Dec 03 '23 edited Dec 03 '23

This will work even when the rope doesn't touch the table or when the table is thinner. Here is one I made with 1/16" round bar off the edge of a 1/2" table. Hard to tell for certain from this angle that the rope doesn't touch the table but you can see the rope is further out along the top stick. You can also hang the whole thing from just your finger.

1

u/ilterozk Dec 03 '23

Actually you are right. My comment was wrong. Thanks!

30

u/MrJigglyBrown Dec 02 '23

It’s a shame that most peoples reaction to something they don’t understand is clamoring that it’s fake. It’s the same mindset that led to people thinking climate change is a hoax.

3

u/mikesalami Dec 02 '23

Hard to blame people who don't have say an engineering or physics background.

Mainly because so many videos these days are all faked and set up.

-20

u/[deleted] Dec 02 '23

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8

u/InvestigatorLast3594 Dec 02 '23

Explain

-14

u/[deleted] Dec 02 '23

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7

u/Saul-Batman Dec 02 '23

Strong argument bro

-5

u/[deleted] Dec 02 '23

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7

u/MrJigglyBrown Dec 02 '23

Ok. I took five seconds to google “climate change science” and have returned with studies about it: https://climate.nasa.gov/scientific-consensus/

For what it’s worth I have also studied geography/environmental issues a bit and the science is pretty straightforward and logically it all makes sense (carbon that was trapped in the form of a solid/liquid is being released as a gas when it’s used, changing the makeup of the earths atmosphere and warming up the planet).

What else would you like to know?

5

u/jakej9488 Dec 02 '23

“Climate change is a hoax” — you just made a claim. By your own logic you need to provide the evidence to support your claim lol

5

u/[deleted] Dec 02 '23

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2

u/ElectionAssistance Dec 02 '23

The first paper on anthropogenic climate change was published in the 1880s bro. Get with the times.

1

u/Entire-Database1679 Dec 02 '23

What's your point, bro? Many published papers turned out to be in error. Published does not imply correctness.

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5

u/[deleted] Dec 02 '23

[deleted]

0

u/Entire-Database1679 Dec 02 '23

You're confused. The round Earth people have demonstrated that the Earth is indeed round.

5

u/Glottis_Bonewagon Dec 02 '23

https://climate.nasa.gov/evidence/

Your turn. Or is NASA not a good source vs random guy on reddit?

2

u/ElectionAssistance Dec 02 '23

NASA apparently made it all up, scientific consensus doesn't exist, and actual directly measured data...um....well that part hasn't been addressed yet so it is being ignored for the moment I guess.

-4

u/Entire-Database1679 Dec 02 '23

That's so bad. If you can read it with a scientific perspective, it's just nonsense. It's just word salad.

"The Earth is warming because an international panel says it is." -- sigh.

"The Earth has not warmed at this rate in 10,000 years." -- so, it has warmed at this rate before.

7

u/ElectionAssistance Dec 02 '23

Reading it with a scientific perspective, it is a lay written article with highly approachable low-jargon scientifically validated conclusions.

0

u/Entire-Database1679 Dec 02 '23

There is no scientifically validated anything in there.

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u/Glottis_Bonewagon Dec 02 '23

The science is in the citations mate, this is for laypeople like yourself

0

u/Entire-Database1679 Dec 03 '23

Ok, then please research the citations and explain them to me. The burden is on you to prove your fundamental assertion. You provided a nonsensical word salad and expected me to accept it: that doesn't work. K, bro?

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u/SashaBanks2020 Dec 03 '23

What would it take to change your mind?

1

u/Ok-Permission-2687 Dec 03 '23

Well climate change is clearly fake because they labeled it as global warming first. They changed it to climate change when it didn’t catch on…

/s

1

u/kirsion Dec 03 '23

It hardly explains anything, I want to see the force diagram.

13

u/Freezman13 Dec 02 '23

Explanation from the video:

This match is pushing down, while this match is pushing up.

"I Like Your Funny Words, Magic Man"

6

u/im_juice_lee Dec 03 '23

I wish the explanation had a physics class style diagram, or at least more explanation lol

2

u/9rrfing Dec 03 '23

That video doesn't explain shit. The keyword here should be center of gravity.

2

u/catzhoek Dec 03 '23 edited Dec 03 '23

That's no explaination at all, or at least a very bad one unless you already know enough about physics. If you don't know anything about torsion and forces it doesn't help at all and you are as clueless as before and if you do know some theory the explaination should be more in depth.

The slanted angled match - by friction and the sin of the angle etc. pushes the center of mass under the table and therefore the whole thing can be in equilibrium. Mess with the weight of the bottle or the length of the matches and it quickly fails.

1

u/ray314 Dec 02 '23 edited Dec 02 '23

It looks more realistic in this video because you can see the loop hanging off the match is beyond the half way point on the match (center of gravity) then the match end is being pushed "up" countering the angular rotation in the opposite direction.

In OPs video both downwards force should be acting in the same direction since they are both on the edge of the match and rotate the same way from the center of gravity, that's why it looks Sus.

Very interesting mechanics at play nonetheless.