Battery Bounce test in Slow Motion - Why Do They Bounce when they are Dead?

[@thefirehawk1495]

Yes it was air resistance to weight that made duracell fall first. You can clearly see they are released precisely at the same time and their distance from each other keeps increasing the more they fall. If I'm right you will weigh the batteries and tge depleted ones will be lighter because you can also see in the footage that dead batteries are hitting the plate later.

[@cherrycolalola6345]

Weight has absolutely nothing to do with it, while air resistance or even a drafty room might cause the discrepancy. Try dropping two objects of similar size and shape but one is considerably heavier. They'll both drop at exactly the same speed. Try dropping a full bottle of water with an empty bottle of the same shape and capacity. In a vacuum, a bowling ball and a feather will accelerate towards the ground or fall at the same speed because the strength of gravity is a constant. A skydiver adopting a head down position will only fall faster than a skydiver adopting the standard belly down arched back position only because of air resistance.

[@user-wh2rx5mb3l]

Free fall velocity is being somehow manipulated. Speculating: One brand's materials cause delayed release to the magnetic release rig? One brand's make up is interacting differently with the rig and is resulting in some electro-mag forces being exherted upon "release". But definitely nothing to do with air or weight in these conditions. (Cool vids. Had to subscribe!).

[@lighteningwawa]

@@cherrycolalola6345 Yes, weight does have something to do with it. In vacuum, they weight different, their mass are different, but the acceleration (weight / mass = g) would be the same. In air, they weight different, the air resistance is almost the same since they have similar shape. Acceleration is proportional to (weight - air resistance)/mass. We know (weight = mass * g). So the final acceleration is [(weight - air resistance)/mass] = [weight/mass - air resistance/mass] = [g - air resistance/mass] . So yes the greater the mass is, the higher the acceleration will be.

[@cherrycolalola6345]

@@lighteningwawa I stand corrected if I said that, but honestly forgot what the controversy was about. lol. After rereading, I believe we both are saying the same thing but in different ways. We agree that drag/air resistance is the cause of the discrepancy and you are correct, a heavier object will be less effected by drag/air resistance because of inertia, but it stands that in a vacuum with no air resistance, the weight of an object will have nothing to do with it. Gravity will effect both of their masses, large or small, equally and their acceleration would be the same.

[@lighteningwawa]

@@cherrycolalola6345 Sorry for digging your old comment :-) Yeah you are right. I guess I misunderstood you because I was a bit mislead by your first sentence, as you said weight had nothing to do with it. IMO weight has something to do (in air) in the way that it affects how effective the air resistance would slow the object down.

[@ProjectFarm]

Warped Perception, Thank you very much for doing this video! You did an amazing job and it was really fascinating to see the batteries bounce as well as see the inside of the batteries to understand why drained batteries bounce more. Your production quality is 2nd to none! I'm really looking forward to your next video! Thanks again

[@ozayrkathrada1340]

Let's talk about that beautiful Supra in the back😍

[@kdubb81]

Next vid, Supra!!!

[@Its_Turboo]

1:00 insert "is that a supra meme"

[@WarpedYT]

Lol that would be good.

[@AwesomeBob]

@@WarpedYT Holy shit is that a supra!?

[@marbesky]

Is that a supra?

[@jakehepper4140]

*wipes glasses* IS THAT A SUPRA?!?

[@Its_Turboo]

this genuinely got more traction then i thought....

[@itaco8066]

So happy to see this channel collaborate with Project Farm, Love you guys, and thank you for well thought content

[@drphu]

Heavier Objects Do Not Fall faster! 4:49 the release was not as exact as portrayed, the reason is the Duracell batteries do not stick to the magnet as well, so when magnet is switched off the Duracell release sooner as the field collapses. Play @ .25 speed to see for your self and if it not the magnet attraction difference and they are heavier, still they were released a bit sooner letting go from the magnet sooner since a heavier object needs more to hold it as the field collapses. None the Less was COOL to see the bounce height all together with the different drain levels, Great Idea!

[@WarpedYT]

It is what you see. But it was with the high speed camera and that equals 1/1000 of a sec. I will do a follow up and look into it.

[@drphu]

@@WarpedYT Still was a great way to prove the bounce/reaming juice test! Awesome Idea!

[@littlebrainiac1]

They do if they have air resistance, just like anything else, and watching this with the high speed camera is almost like looking at something microscopic with a microscope. Even the slightest movement is amplified and magnified.

[@drphu]

@@littlebrainiac1 True but Douptfull in this case as even the maker of the video agrees, Besides the batteries are nearly the same. run at 0.25 speed and see for your self, it's in the release is all.

[@duansadie338]

Agreed

[@freedawn_]

Ive heard this before but never really thought about it, then you explained it and makes total sense. Awesome stuff :D

[@lozcomm]

love that slow-mo, even the slightest moments could be appreciated with that i didn't appreciate my battery test on my own tho

[@Leonardokite]

That's absolutely nuts!!!! Pretty dawgone cool for sure. So who needs a battery tester after this!! (OK, for some things)

[@nikolaishriver7922]

“That looked pretty AMAZING! OH MY G- nah I’m just kidding” 🤣 That was epic man. Cracked me up

[@colintinker7778]

Great set-up for dropping the batteries and the explanation why the batteries bounce at different rates. Enjoyed the video. Thanks.

[@johngreco7171]

Clever solution to the drop rig.

[@WarpedYT]

Thank you, nothing is faster than electricity and light!.

[@Saadi_Lyfe]

Its always amazing to learn something new... thank you for this video.... I have a whole pack of partially used batteries with me at home which i planned to use in random kids toys... now i can easily test all of them to just separate the partially weak from the dead ones...

[@mrclucker1969]

Brilliant visual demonstration - really clear to see the difference in charge. This is why I subscribed to this channel - thank you!

[@VW7472]

This is the best demo I have seen of this yet !!!!

[@WarpedYT]

Thank you !.

[@jeremybob18]

Best explanation of why that happens ive seen! Most just say idk y it happens, just does or prolly has to do with... U actually showed and explained y! Thanx for another great video!

[@jeremybob18]

I did not read any other coments b4 posting, then saw project farms pinned comment. His was the first battery jump test i saw and also the best execution of removing the human factor (thats y i love project farm!), till urs! Great idea with the magnet!

[@WarpedYT]

Thanks, I was really amazed as to the fact that batteries bounce when they are depleted, so I had to look into it and see why it happens, the battery also becomes slightly lighter as well.

[@notalostnumber8660]

The inside perspective was new to me, thanks!

[@chaplainand1]

What an amazing test set up. Genius.

[@zephyrwestern3056]

Thumbs up for the test setup👍. Better than any mechanical system one can build that resembles a greyhound racing track.

[@Sebastian-wx4jc]

Another good Video! Love Your car BTW👍💪😀

[@mu9900]

The quality on your videos keep me amazed all the time! Good job ❤

[@Sercil00]

Great. Now I can test my batteries a lot quicker. And everyone is going to think I'm an idiot.

[@sinewave3323]

This was really neet! Thnx a million for explaing and debunking this for us! Much appreciated! I always wondered this to! 😎👍👍

[@Rx330lexuslover]

NICE SUPRA!!!!

[@fcweng]

Wow ! didn't know there's gel in the alkaline batteries... Thank you for enlightening !

[@upsidedowndog1256]

Great test rig, video, and subject as always. The Supra in the miniskirt looked cool too.

[@AwesomeBob]

Gotta reference Newton's laws though on the Duracell batteries hitting before the Kirkland batteries. That's not how gravity works. It may be that their composition (what they're made of) caused them to release from your electromagnet differently than the Kirkland batteries though.

[@DanielRafacz]

You are forgetting about air resistance. Objects of different masses only fall at the same speed in a vacuum. Heavier objects will fall faster through air (i.e. brick vs feather). If you look closely, the batteries are all level with each other immediately after they release but become staggered upon reaching the table. This implies that the Duracell batteries contained more mass and thus could exert greater force to move the air out of the way as they fell to the table.

[@WarpedYT]

Good point, no they all released exactly at the same time if you look at the footage. That's a really interesting point though, if they are not anywhere near terminal velocity why would one drop any faster than the other. Maybe I need to use that same dropper rig and look into this in the future.

[@AwesomeBob]

@@DanielRafacz The differences in weight and aerodynamics are negligible in this case though. When comparing a brick and a feather, the feather's aerodynamics are greatly disproportionate to it's weight compared to a brick's. These batteries have the same aerodynamics as they are all the AA standard sizes and nearly, if not, identical masses.

[@AwesomeBob]

@@WarpedYT I didn't explain my suggestion for what could be causing the differences in release _just_ after you turn off the electro magnet. I believe it may be that the metallic composition of both batteries are just slightly different. That combined with the magnetic field not fully dispersing may cause the batteries to have been pushed/pulled differently right after shutting off. Perhaps some slow motion footage with iron filings and that electromagnet being turned on/off, as well as cutting the batteries open (if that's even safe) to inspect why they may be dropping differently would reveal some more answers?

[@TheMechanicalKoopa]

I loved this video! never knew about this. really interesting drop rig you made too that's pretty awesome! Great work man!

[@WarpedYT]

Thank you, Project Farm is the one who told me about the battery bouncing in the first place. I had no idea before that either

[@ced1106]

Hardcore work! Was interested in store brand vs. Name brand. Thanks for the videos!!! ⚡⚡⚡

[@ObserwatorII]

Amazing channel! I will show Your films to my students in Poland. I hope so, because of covid-19 they had no lessons since 15th march...

[@843292]

Awesome video! I've tested this myself before, but I didn't have your super accurate dropper!

[@sundhararajanganesan9396]

Beautiful, thanks so much!

[@netneedingsystems2318]

Pretty cool, thanks for sharing with us.

[@ronkumar2847]

Give this guy a Nobel prize.....

[@WarpedYT]

Why Thank you !

[@DrHouse-zs9eb]

Very interesting. Always wanted to see that in slomo.

[@WarpedYT]

Thanks

[@jlo4954]

I'm hooked with your content. Subscribed!

[@WarpedYT]

Thank you, I appreciate it!

[@yungshinobi8162]

Man lost his finger... Which makes these Videos more thrilling!

[@WarpedYT]

That is what my friends always tell me...thank you !!!

[@mewintle]

Ooh. That’s embarrassing. Still, thanks for the information and for making such a nice test-rig!

[@darrennaicker1913]

I learned allot as well...great video 👍🏼

[@user-wh2rx5mb3l]

He mentions fall rates. Duracell's weight is irrelevant to fall rate on Earth. It's either the material of the contract points releasing differently from the release rig, or some high-level electro magnetic sh*t going on within each battery and the rig, when he flips the release. Or both. (Cool vids. I had to support and subscribe!!)

[@WLFFellowship]

Beautifully done! Excellent set-up, explanation, and rig! #Duracell should sponsor you! :-)

[@OttoMatieque]

I just learned something / didn't know dead batteries bounce

[@HaloBalla]

Would it make more sense that the magnet had a different hold on the kirkland batteries and that's why they fell behind? I learned in school and relearned from Veritasium (which is a channel here on youtube) that objects fall at the same rate. Perhaps the magnet has a greater attraction to the kirkland batteries and or the kirkland batteries lose their attraction to the magnet that tiny bit slower.

But heavier battery will came loose from magnet faster as magnet doesn't loose magnetism in an instant and lighter battery will hand longer. Also heavier battery has more momentum and that helps it fight with air drag.

[@NateD77]

HaloBalla Your assumptions are correct, it's all about the magnets influence on the batteries. The speed and size of the batteries are insignificant for air resistance to have any measurable effect.

[@WarpedYT]

That's a great point, they should all fall at the same rate since they are nowhere near terminal velocity. The electromagnet releases them exactly at the same time. I mean as long as it takes an electron to get from one side to the other that would be the delay, but that's incredibly fast, less than a millionth of a microsecond. I'm going to have to look into that in a future maybe do some experiments. Thanks

[@AzeezOverseas]

This video should get more views.

[@ciprianwinerElectronicManiac]

Great stuff, now try it with 9v batteries, i tried it myself but I still need to get some more batteries to make up my mind if it actually works or not...Cheers :)

[@WarpedYT]

9v yes. That's a great idea

[@alssabea]

Really helpful for my test.

[@Allthingstech3108]

You are really smart man.

[@jpe1]

12 years ago I was shown the technique for bouncing batteries to test SOC, but the person telling me it worked was a high school dropout *and* I couldn’t imagine a mechanism by which SOC would influence kinetic behavior, so I doubted him. Watching this video I am re-evaluating my prior doubts, and the explanation that the electrolyte changes state does seem plausible. Unfortunately the video has many jump cuts so it could easily be a fake, so I will have to do some research on my own and perhaps conduct my own tests. Gotta love science!

[@WarpedYT]

Yes check it out, I am going to do a follow-up is this episode where I go more in-depth on the subject, this was just focusing on whether they bounce or not, it was very interesting indeed. I can guarantee you this was not fake, but one thing you should keep in mind is that the bones test only works with alkaline batteries, no others as far as I know. I know for certain the rechargeable batteries I tried did not bounce any different.

[@chickennn7830]

John Early but you gotta think why would there be a reason for this guy to fake it? Most likely true lol

[@jpe1]

Chickennn I agree, and I didn’t say I think it *is* fake, just that the way it was edited it *could be* fake. My hunch is that it’s all legit, which is what has me excited to try to replicate the results. I understand why WP cut it the way he did, he was making a video as infotainment, not trying to document a scientific experiment.

[@USN_Ret-]

@@jpe1 Do watch Project Farm? If not check out this video. kzbin.info/www/bejne/jGiQmJuoidZ0apY

[@vladiXX]

DAT SLOMO, very cooool!

[@intraxx88]

Similar thing is with eggs. When you spin fresh egg then quickly stop it and release again, it spins some again. Boiled egg has other structure and it stops by hand instantly. This way you can check whether the egg is boiled or not

[@mazdalorean]

Very cool. Thanks for the show

[@sethhorst6158]

Well, now I know a good way to see if a battery is good or not. I somethings will come across spare double a's or triple a's at home some being used.

[@RoyKarny]

Epic! I actually used that to teach my kids . @WarpedPerception is that okay if I use it to elementary students chemistry lesson?

[@V1S3]

make a video of that beautiful supra

[@last549]

Homie .. great channel

[@amirhasson5465]

So are we just disregarding that beautiful mkIV Supra

[@Conifera15]

I never thought that a discharged battery would bounce more than a charged one. So curious!

[@johnrizzotti9707]

What a beautiful supra u got there. Best car ever. 2jz baby

[@WarpedYT]

Thank you

[@ThomasMusings]

FASCINATING

[@Zenefor]

You should use laser motion sensors. One which starts the timer when the battery has started to fall and another one which stops the timer when the battery has fallen

[@ricardoromero7734]

Learned a new thing today. Thanks youtube. (The more you know!!!)

[@morkovija]

Oh hey, good content!

[@WarpedYT]

Thanks, glad you like it , this is just a small kind of viewer request video, but it was fun and I definitely learned something for sure.

[@WarpedYT]

Funny that your username says 1.5 x playback, when I was finishing the final edit I almost spit up the entire intro by 1.5x but then I decided to just cut faster...lol. I think it's an interesting experience when you watch a KZbin video at 1.5 or 2 times the speed, and then when you stop it you feel like you're in some sort of Time Warp, really weird feeling

[@morkovija]

i know right! But It always gets weird when watching slow mo's. As for regular vids - after some time (and depending on the time of the day) it feels like normal videos are slow mo, especially of people talking.

[@g.g4816]

Cool video !

[@LalwaBhaiTales]

Is that a Supra?

[@WarpedYT]

Yes sir !

[@WarpedYT]

Yes

[@55Ramius]

Nice video demo of the battery bounce effect. I would love a camera like that. Do you rent it or did you sell a car to buy it ?? : ) I know they cost a lot.

[@WarpedYT]

Ha! No I use a lot of different cameras, I own some and borrow others from sponsors. A car would be enough to buy this camera actually, unless it's a lambo.

[@RistaMotorista]

great job, how's the turbo briggs build going? this supra of yours is staring at me the whole video (enjoyed it a lot, can't wait to hear it) :D

[@WarpedYT]

Going good, what the last episode you watched.

[@RistaMotorista]

@@WarpedYT the last one you uploaded with a small turbo, where you sprayed nitro into the turbo and you said you'll do a full efi system very nice video, could watch it all day long on repeat :D

[@WarpedYT]

Well I'll give you a little spoiler, we started filming episode 7 the other day, I plug that hole in the turbo with a screw, the hole that was leaking boost, I did a live stream on the behind-the-scenes channel but it made about 4 pounds of boost and 8.5 horsepower.

[@RistaMotorista]

@@WarpedYT woow very nice

Heavier things don't fall faster lol it's about surface area.

[@maximog19901]

Sorry for the dumb question. I guess you answered it So often, but what happend to your middle finger? I've seen many Videos of yours, but i saw it the first time. Greetings from Germany

[@vladi_g]

His dog bit off. He told.

[@WarpedYT]

Nah that was my ring finger your talking about, the middle finger I lost when I was 3 or 4 in a Ludlow machine.

[@WarpedYT]

Lost it in the gears of a Ludlow machine when I was 3or4

[@maximog19901]

Ah okay. Thanks alot for the Quick answer. Like your Videos very much. Keep it on😉

[@VitorMadeira]

Yeah, I'm a subscriber for quite some time now and it was the first time I saw that too. And, as for here: Greetings from Portugal. ;)

[@dezertraider]

Thank you and Fantastic! Love the channel.Stay well.73

[@locouk]

Interesting results, how dose it work for batteries beyond their use by date?

[@logicool2793]

is that a SUPRAAA!!!???!!

[@WarpedYT]

Yes.

[@sammy5708]

That Supra thou😍😍😍😍😍😍😍🔥🔥🔥🔥🔥🔥

[@ayubasgari3008]

amazing, thanks

[@PabloSoy]

Buen vídeo. Hasta la vista.

[@WarpedYT]

Hasta la proxima !!

[@awitao]

Cool!

[@Chaoslava]

Surely the difference in drop speed isn't due to weight or discharge amount, but more to air resistance? Are the Duracell batteries slightly more tapered on the bottom (they look it) this would make them have less drag and thus accelerate faster. A bowling ball & a feather fall at the exact same velocity in a vacuum, so it's not gravity - it's air resistance!

[@shubhamjain54519]

Awesome

[@aukett16]

hey Warped Perception, i'd be interested what the rated capacity for Duracell vs the Kirkland battery is. could you measure which has a longer discharge or more power than the others, or do a test between numerous brands ? would be cool. i work for Costco(Fork Lift Driver), so would be interesting to see if their own branded stuff is as good as the competitor, as Costco says, their own brand matches or beats the quality of the branded product, but are usually cheaper.

[@WarpedYT]

Here check this out kzbin.info/www/bejne/jGiQmJuoidZ0apY let him know I sent you, he's a friend of mine.

[@thebacon58]

Inside the batteries there’s acid

[@GevXander]

Supra in the bg

[@Mikishots]

Pretty coooool

[@RhdKid53]

Matt let me drive the supra already lol

[@logicool2793]

Heavier objects do NOT fall faster than lighter ones in a perfect vacuum

[@WarpedYT]

Great point, I wonder why some of these batteries fell faster than the others. They are all releasing at the same time from what I can see looking at the high-speed footage. But they definitely fell at different velocities. Which was very interesting to see. But again keep in mind that on the high-speed camera it looks like a lot more than it is. From what I calculated the two sets of batteries fell about two frames apart at 2000 frames a second. So that means they're only one millisecond away from each other. That is a very very small difference. Maybe using the same drop rig I should do some future experimentation. For instance dropping things in a vacuum versus regular atmospheric pressure. Maybe even these same batteries. Thanks for the feedback you got me thinking

[@logicool2793]

@@WarpedYT That would be a prefect video to put on youtube and debunk the idea that other people think that heavier objects fall faster! I wonder what caused this small difference. Cant wait to see your next video!

[@joshchavers7391]

I'm having a nergasm from the science yay science lets go morty.

[@adrianvalbuena8158]

amazing

[@lilibethgabasa1866]

Nice supra ❤❤

[@alberteinstein3078]

I think The king of random just did one of these videos.

[@WarpedYT]

They are one of the ones who asked me to do the video. But Project Farm was the first one to ask me.

[@alberteinstein3078]

@@WarpedYT Thats what i was thinking! Congratulations man I'm glad to see your channel grow you deserve it!

[@WarpedYT]

Thanks, just got to pump out more videos ! Thanks for your long time support.

[@WarpedYT]

No offense to King of random, but did you see that ridiculous drop a mechanism that they built, it was never going to drop the batteries at the same time because all of the pull pins were different lengths..lol

[@alberteinstein3078]

@@WarpedYT Yes! Didn't want to say that but yeah terrible lol

[@RainbowboyGamerLevelUP]

Dog is watching in camera 1:36 I'm the 225th comment

[@rogerhu126]

I need that Supra at 0:25

[@historycollector5038]

2:43 And 4:27 And 5:37. what you came for 😏

[@subPewDiePie-jh6il]

Ty

[@deltacharlie5331]

You forgot to put a timestamp with the Supra 1:00

[@historycollector5038]

GroundControl but that wasnt in the thumbnail

[@jonseon5952]

Actually I came to see what's inside a battery.

[@prakharmishra5187]

That's cool man

[@WarpedYT]

Thank you !

[@duansadie338]

Please do a video with rechargeable batteries

[@tiesogarnas5904]

1: 00 iš that a supra 😍

[@aussie2uGA]

No wonder Tesla’s are so safe in accidents - they just bounce off everything 😁

[@RCmaniac667]

They heavy as truck, that's why

[@ddanci]

That SUPRA :)

[@ev0wizard]

Still waiting on that supra slow mo burn out vid :-)

[@WarpedYT]

It's coming, just waiting for the warm weather, almost here

[@toysareforboys1]

Damn, the amount of light that's required for nice slow mo, impressive. Amazing work man.

[@WarpedYT]

Ha!, So true, that's why I had sunglasses on, I had a headache from all of that light halfway through the episode.

[@maxl9911]

IS THAT A SUPRA ?!!!! DO A VIDEO ON IT !!!

[@WarpedYT]

Yes and I will, just waiting for good weather in Chicago

[@maxl9911]

@@WarpedYT Thank you !!! It is a legendary car.

[@TX97SR20DET]

You sound like Norm MacDonald lol.

[@AwesomeBob]

Yay science!