What cracks me up is the piece of metal, labeled metal, attached to the one metric ton of… Metal
Checkmate, science
Submitted 1 year ago by ickplant@lemmy.world to science_memes@mander.xyz
https://lemmy.world/pictrs/image/ea9bb79d-ca8a-473d-b94b-9a4c6e94e416.png
Comments
Ulvain@sh.itjust.works 1 year ago
RedditWanderer@lemmy.world 1 year ago
It’s to differentiate from the trucks where the front is entirely made of very bring LEDs
jose1324@lemmy.world 1 year ago
Cars these days are like 80% plastic crumble zone
TheWolfOfSouthEnd@lemmygrad.ml 1 year ago
Doesn’t the Cyber Truck have no crumple zone? It might apply to that.
Hupf@feddit.de 1 year ago
metric
You sure about that?
late_night@sopuli.xyz 1 year ago
Well, the metal sees the magnet and wants to eat it so it move toward it. It’s the ol’ Magnet on a Stick trick and metal is easily fooled.
bloubz@lemmygrad.ml 1 year ago
Also since they’d want iron specifically
dogsoahC@lemm.ee 1 year ago
Well, nickel or cobalt should work too, if middle school science memory doesn’t fail me.
Matombo@lemmy.world 1 year ago
Fun at partys guy: While the car will actually experience a force torwards the magnet, so will the magnet experience an equal amount of force torwards tha car. Given the connection between the car and the magnet is stiff, these opposing forces will stress the connection and create a reactive force in there according to Newtens 3rd law, ultimatly canseling the forces out and neither the car nor the magnet will move.
If you however remove the stiff connection, the car and the magnet will move torwards each other untill they meet.
affiliate@lemmy.world 1 year ago
what if you just attach a second magnet to the car so that it pulls the first magnet forwards?
cynar@lemmy.world 1 year ago
Then you have the same mechanism used in toy wood trains.
randint@lemmy.frozeninferno.xyz 1 year ago
gee, you must be fun at parties (/s if it weren’t obvious enough)
voodooattack@lemmy.world 1 year ago
How about if you launch a huge magnet well above escape velocity and remotely anchor a space elevator made from a ferromagnetic material to it but the space elevator’s weight counteracts its inertia exactly and holds it in place perpetually. Would that work?
Natanael@slrpnk.net 1 year ago
It needs to rotate unless it’s a superconductor.
Also a magnet that size would mess up navigation equipment for miles
SynopsisTantilize@lemm.ee 1 year ago
Would that be at the hing of the arm? Where would the event horizon or epicenter be of that?
credo@lemmy.world 1 year ago
It will, but why do you want the truck to attract the magnet? Are you going to drive backwards everywhere?
walter_wiggles@lemmy.nz 1 year ago
This guy gets it
regdog@lemmy.world 1 year ago
This illustration does not imply that the car is moving. There are no “speed lines” or arrows that would indicate that.
So the illustrated setup would 100% work.
MonkderDritte@feddit.de 1 year ago
Try pulling yourself by the nose.
5in1k@lemm.ee 1 year ago
I hit 60mph and am like 20 miles from my house. Why would you tell me to do that?
Hobo@lemmy.world 1 year ago
At least you didn’t pull upwards like I did. Glad the ceiling was there or it could’ve been much worse.
ShepherdPie@midwest.social 1 year ago
Or picking yourself up by your bootstraps.
themeatbridge@lemmy.world 1 year ago
Or using your bootstraps to pick your nose.
AgentGrimstone@lemmy.world 1 year ago
It’s working! I’m moving!
pleb_maximus@feddit.de 1 year ago
Good old troll physics.
W…wait, why is the troll head missing?!?
nossaquesapao@lemmy.eco.br 1 year ago
Looks like people are (re)discovering troll physics
Venator@lemmy.nz 1 year ago
Tinted windows.
prime_number_314159@lemmy.world 1 year ago
I built a scale model to prove the haters wrong. I had to tilt the platform a little for it to overcome friction, but once I did, the car rolled forward until it hit a wall.
Aurenkin@sh.itjust.works 1 year ago
So this would work actually but only for a brief second as the electrical current generated by the frame of the vehicle passing through the magnetic field would disrupt the flux conduction in the magnet. This is mostly due to being the way that it is.
Hjalamanger@feddit.nu 1 year ago
Could we fix it by constantly increasing the (electro)magnets strength?
Feathercrown@lemmy.world 1 year ago
What’s funny is this would actually work if you just pointed the magnet at other people’s cars.
drislands@lemmy.world 1 year ago
“this would work if you did something completely different” lmao
phoenixz@lemmy.ca 1 year ago
It would only work if you manage to keep the car at an extremely precise distance from the car in front. If you’re off by tiny tiny amounts, you’ll either lose the magnetic attraction, and stop, or you’d started getting closer fast until you’d be stuck to the car in front of you
Feathercrown@lemmy.world 1 year ago
Being stuck to the car in front of you is more efficient for traffic anyways
Rakonat@lemmy.world 1 year ago
Use to magnets of opposing polarity, the stronger magnet should be on the bumper to push the boom forward, and drag the truck with it. /s
Feathercrown@lemmy.world 1 year ago
Genius
kbal@fedia.io 1 year ago
Less fun at parties guy: While the diagram leaves it somewhat unclear as to what precise effect that mechanism is intended to achieve, clearly it involves electromagnetism and thus any proper explanation must begin with a full description of quantum field theory...
snooggums@midwest.social 1 year ago
Because both of the magnet’s poles are pointed at the car and the attraction and repulsion are canceling each other out.
Mango@lemmy.world 1 year ago
The mount is holding the truck back. You need a wireless magnet.
MentalEdge@sopuli.xyz 1 year ago
This is actually kind of how electric motors work and you can’t tell me otherwise.
FuglyDuck@lemmy.world 1 year ago
The difference is, that the rotor is allowed to move, and they’re switching coils in the stator to keep it going.
In this system, the force pulling the magnet towards the truck is being negated by the arm fixed to the truck.
If you placed a bunch of electromagnets on the guard rail, that would be more like a motor (technically, a linear motor,)
MentalEdge@sopuli.xyz 1 year ago
thatsthejoke.jpg
YeetPics@mander.xyz 1 year ago
Well, you used aluminum. Good work.
Lemminary@lemmy.world 1 year ago
Me sighing as people akshually comment explaining the obvious in a meme sub. 😅
LemmyKnowsBest@lemmy.world 1 year ago
Hey now, I’m not an engineer So the first time I saw this a few weeks ago it kinda blew my mind and I really had to think it through. Please don’t shame people when they need to take a moment to think things through.
Lemminary@lemmy.world 1 year ago
Hold up, I’m not shaming anybody who wants to think things through. You’re more than welcome to, as you do in your regular day to day. I just think it’s funny that people feel the need to over explain anything and everything on Lemmy even the troll stuff they see in a shitpost, which is very different. Don’t overload my comment with a take, please, that’s not what I’m doing.
LibertyLizard@slrpnk.net 1 year ago
You realize these are all incorrect right?
LemmyKnowsBest@lemmy.world 1 year ago
Please explain the correct answer
Lemminary@lemmy.world 1 year ago
You realize I responded when there was only one comment, right? 🙄
lowleveldata@programming.dev 1 year ago
No stupid question
Lemminary@lemmy.world 1 year ago
It’s a troll post in a meme sub. Idk what to tell you… Sure, I guess?
LemmyKnowsBest@lemmy.world 1 year ago
because the truck is self-propelled, and it can only go as fast as it takes itself. Therefore the magnet, which is attached to the truck, can only go as fast as the truck takes itself.
FiskFisk33@startrek.website 1 year ago
Some guy got hit by an apple and went on to ruin the fun for everyone, jerk.
PenisWenisGenius@lemmynsfw.com 1 year ago
The CIA puts backdoor code in all the magnets to prevent this from working. Source: trust me bro.
idunnololz@lemmy.world 1 year ago
It’s actually a common misconception that magnets always attract metal. This misconception was popularized by people joking that magnets are magic. In reality, magnets attract because they have magnetions in them. These magnetions allow them to attract things like metal but a little bit is used on each time. Eventually once the magnet’s magnetions have been depleted, the magnet turns back into a newt and goes home to recharge.
wafflez@lemmy.world 1 year ago
[deleted]idunnololz@lemmy.world 1 year ago
Science is trying to find a way, but for now you need a witch/wizard to recharge it.
RedCarCastle@aussie.zone 1 year ago
It’s because the magnet is in the vertical position, it needs to be in the horizontal position to properly complete the circuit
callyral@pawb.social 1 year ago
the car already has metal in it, so the metal block is unnecessary
rickyrigatoni@lemm.ee 1 year ago
Adding more metal makes it go faster
Illegalmexicant@lemmy.world 1 year ago
Speed holes you say?
ickplant@lemmy.world 11 months ago
This person understands science.
Siethron@lemmy.world 1 year ago
Magnets don’t do work
spizzat2@lemm.ee 1 year ago
It’s cuz they got wet, isn’t it?
Draegur@lemm.ee 1 year ago
easy: the metal is pulling the magnet backwards and the magnet moving backwards is pushing the whole truck backwards through the arm.
mdurell@lemmy.world 1 year ago
Wile E Coyote has entered Lemmy.
Arbiter@lemmy.world 1 year ago
Obviously you used a non ferrous metal.
Rixster@lemmy.world 1 year ago
Go (back) to school
FiskFisk33@startrek.website 1 year ago
The large array of third party lighting fixtures exert photon pressure enough to cancel out the magnetic pull
Steelmonkey@lemmy.world 1 year ago
After hitting too many children the tires will get stuck.
Venator@lemmy.nz 1 year ago
Why not just use rope instead of a magnet? You wouldn’t need the extra metal on the front of you did that and would save weight.
Michal@programming.dev 1 year ago
It will work fine of your intention is to secure the arm so that it won’t dangle when you drive
CarbonatedPastaSauce@lemmy.world 1 year ago
Because it makes the vehicle too long to park in the average garage or driveway.
herrcaptain@lemmy.ca 1 year ago
Finally, an answer that makes sense.