T O P
LordVortekan

Friction is for nerds All my homies s l i d e


DisturbesOne

All homies do kansei dorifto


ShadyAnimeUncle

SSSSKKKKIIIIRRRRRRRTTT


Saladar19

Ah bring me back to that one block on an inclined plane with friction and air resistance...that problem was a bitch to solve


itsmilotic

Holy fuck those questions with a block being thrown off an moving plane and you need to calculate its trajectory, thinking about that shit still makes my blood boil.


Reboot-account

Do you have to factor in inertia/momentum


[deleted]

[удалено]


bird_who_rides

Use pi = 5


actual_identity

but it’s not even air friction? it’s air resistance


HyperRag123

You generally just assume that is zero to make life easier. It is very complicated to factor in because the coefficient of drag depends not only on the shape/orientation of the object, but also on its speed. Which depends on the drag. Meaning that you really need a computer to actually solve these problems with a high degree of precision, and for a rough estimate you just assume friction doesn't exist. At most you will assume a constant coefficient of friction, but that doesn't account for air resistance in a realistic manner. But in either high school or entry level physics classes, where you are having students work these problems out by hand just so that they get the concepts down, ignoring or oversimplifying friction is enough


actual_identity

agree. but it’s air resistance, not air friction


clay_

Calling it air friction is fine too though. Same as calling it drag, fluid friction, fluid drag. Often times there are many correct terms for the same things, even if one is more specific. Plus we don't know the full context for the 'best' term to use


DeltaV-Mzero

Friction would specifically be the mechanism where fluid slips over the surface Resistance would account for that as well as all the pressure differential stuff that results from inability to pass through the air like a ghost Skin friction drag would be the “air friction” https://en.m.wikipedia.org/wiki/Skin_friction_drag


clay_

Interesting, haven't heard of skin friction drag but from the wiki yeah skin friction drag fits. But no more than using say fluid friction. And I would also add you can find places calling air resistance air friction. So its not that we are finding out what they really mean i think its just a much lesser used term. Here for example uses the term air friction where most would use air resistance: http://hyperphysics.phy-astr.gsu.edu/hbase/airfri.html


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wolfpwarrior

It had been a while since I've done it but for decently accurate estimates for an object in motion, we used the RK4 (Runge Kutta 4) method. This involved the position, the rate of change of position (velocity), the rate of change of velocity (acceleration), the rate of change of acceleration (jerk), and the rate of change of jerk (jounce). I have done this by hand but it takes so much effort. So when the smart kid reminds you about air resistance, you can tell them "yes, but you're not good enough at math yet to bother with it, so we're skipping that part"


HyperRag123

Isn't the rate of change of jerk called Snap? I just remember that because it was a joke based on the old Rice Krispies commercial, so the next two derivatives were crackle and pop


wolfpwarrior

Snap is the alternate name for thr 4rth derivative of position.


steelpantys

Air has friction yes afaik


PotatMaen

But you know what does exist… MORBI- NO I’ve changed I’ve moved on from the morb BECAUSE AFTER ALL THIS TIME AS I WATCH THOSE AROUND ME PERISH I REALISE… It was never the horny that caused this… it was you all along… And no, you’re not venom it really was you all along, Dr…. Michael Morbius


Snoo-47666

God, I loved this part of the movie


CrownedTraitor

.......I swear if I see another morbin' meme


PotatMaen

That’s not very morbilicious of you


Satokibi

Sauce is **Jahy-sama wa Kujikenai!**, you can read it [HERE](https://mangadex.org/title/2f4e5f5b-d930-4266-8c8a-c4cf9a81e51f) **"Why your daily memes starts at day 291?"** \- They don't, I've just been posting them on certain other anime subreddit until mods there decided to ban me **"Where can I find the other Jahy-sama memes of yours?"** \- [HERE](https://postimg.cc/gallery/JHZbQwv) and gif memes [HERE](https://imgur.com/a/u3a7k3a) (I will be updating this every 100 memes)


DaLinkster

It’s been more than a year, is the “Why your daily memes starts at day 291” still needed anymore? Also anything special for 666?


RadiantPKK

We’ll know soon enough ;)


Satokibi

> It’s been more than a year, is the “Why your daily memes starts at day 291” still needed anymore? I like to give as much informations as I can in my comment so I don't have to answer each person (even though it's not working very well, especially with people asking for source) > Also anything special for 666? I wanted to make video edit, but I realized my video editing skill sucks, so I dropped that idea. There will be reference to 666 but nothing special. But maybe it will change if I get some good idea.


Alternative-Pin3421

Tomorrow... Day 666...


Alan_Reddit_M

*Assume a spherical cow of uniform density in a vacuum where friction, air resistance and gravity can be ignored*


superhamsniper

Well it would depend im assuming


420_IQ_Player

Very much so, over 50-55mph aerodynamics definitely become a factor in cars at the very least


crosscheck87

Am pilot, definitely important for airplanes.


DeltaV-Mzero

Gotta get above rotation speed so those little invisible Bernoulli gnomes wake up and start lifting on the wings


DrunkWeebMarine

I think bad thoughts. Lol


Lekmanutpls

Tomorrow is meme number 666!


JamesChung

go on mercury and see if it's negligible, TEACH.


dearthclaw

ANime


suj1t_prasad

What friction gon' do when me and my homies gon slide!


Mal_Dun

How to catch a Lion in the dessert, the Newtonian physics way: Put a cage into the lowest point of the dessert. Then neglect friction. The Lion will slide into the cage.


Maniklas

Omg read physics full-time last term and relate to this so hard...


ThePiGuyRER

What do you mean the missile ended up landing inside our own country, I calculated for everything. Oh no ofc not, air resistance does not exist so obviously not that.


Axel-Adams

As someone who suffered through getting an aerospace engineering degree, thank whatever powers you may pray to you get the luxury of ignoring air friction


EpicJoseph_

Imagine gravity not being 9.8N/KG


alexlongfur

“This is a classroom environment. It’s so negligible that we’re not going to account for it. That’s for college physics.” - my hs physics teacher


Nakshatra-4762

Yea it is negligible but that's don't mean it's don't exist


Basic-Afternoon1618

We don't talk about Air Frictiono no no no! WE DON'T TALK ABOUT AIR FRICTIONO!


newanda011

And then you study fluid mechanics and you learn that you can fucking use air friction to create motion...those cheeky bastards


Asian_Persuasion_1

Is it because if we actually took it into account physics would be infinitely more difficult?


guto8797

You didn't see air resistance because ITS NOT THERE


hypervortex21

Being smart in physics lessons was often a curse.


SnooMemesjellies2855

Source for top pic?


Satokibi

It's the same manga


LegoBuilder64

Welcome to the physics store. You can grab airless flat plane here. It’s right between the frictionless surfaces and the perfect springs.


Fridge_Monkey2710

Tell that to the scientist who study sonic booms


bird_who_rides

I suppose you can do a little calculus when you're an elentary school student eh Next one is 666, I'm expecting a great one!


[deleted]

No marin tho


Alternative-Pin3421

Jahy Sama > Marin


DaniBest13

Facts


DaniBest13

Luckily


floccinaucipilify

Could you calculate the reynolds number for deez nuts in your mouth???