Lec 25 | 8.01 Physics I: Classical Mechanics, Fall 1999

[dustylee]

dang he hurt himself for his class! what a devoted teacher. plus he explains the subject very well. there needs to be more of them like him.

[LanRous]

Guys if anyone could refer me (tell me where i can find) to the integration that Lewin says at 24:40 it would be really appreciated.

[mdiem]

Reminds me of my freshman college years doing engineering statics. So many things you can do with just a couple basic concepts!

[kaosgirl50]

Man, I don't remember learning this in 8.01! Get it together MIT. Get it together.

[thejameskan]

really informative and interesting

[taimoor722]

what is the name of sir

[albinofunboy]

@taimoor722 Walter Lewin

[Kricardose]

I am very happy to see the vidoe after you give this Static Equilibrium

[bebeheuy]

I Love The Video It Can Increase My Knowledge Static Equilibrium Stability Rope Walker

[Mjhond]

Steady I Really Like This Video Static Equilibrium Stability Rope Walker

[ollobrains1]

I was here

[anshulmalhan007]

the dotted lines always have me mesmerized... :D

[muhammadzahmad]

excellent professor!!! he has his own way of making his lectures easier to learn.

[MrPEDOCTOR]

Thanks MIT

[Ghaiyst]

When doing an engineering project with my friends, I suddenly remembered this video. We totally took advantage of the idea that if you have so many turns with a rope, you could use the frictional torque to your advantage. I love this guy! Walter Lewin deserves a nobel prize in physics!

[raffadimpo]

very very low level....high school level or less

[AlanKey86]

Am I the only person that REALLY wanted to see the derivation of the slipping rope equation?

I tracked it down fairly quickly on Google. Search "Capstan Equation" and view the wiki article. It's awesome.

[khmersv]

@hydralisk3313

it takes alot of studying and time to understand . but be proud you even tried it means your mind is open and willing to learn :)

[richarddmorris]

Thank you MIT



[irrahimismail]

homaigod . this is really great . help me a lot :DDD

[666Nastyman666]

His drawings are so good. Reminds me of my high school physics teacher. "So we will have a helicopter rising at 10m/s....ill just draw it here....its a blackhawk....some missiles..." real good drawer.

[Treephoo]

all the students look like they're supposed to :)) funny

[jcxhaox1]

Bright fucking guy.

[MarijaBlueBG]

Blackboards are awesome.

[kotofu]

wait, why is there not friction at point P? I mean, its probably negligible but if there was not friction, there is now way the ladder can stand, ie. it is in unstable equilibrium. Right? I just think about the rubber on both the bottom and top of the ladder (stabilize the ladder)

[Ghaiyst]

Kramer from Seinfeld?!? HAHAHA What a genius! I knew he could pull it off!

[TooRaw4COD]

Can I get into MIT with a ACT score of 13?

[Chingonshushu]

i'm not intrested in this at all infact I sometimes have this guy talking in the background, as someone else said it is stimulating, and poeple please stop saying why are'nt others watching these things much more, half of the world already has enough of going school and learning, I guess they just want a break lol for real though stop saying daft things, you lot look like real geeks. lol anyhow I like this guy he does make things clear.

[MyPooptaco]

i dont get it im in 7 and i dont fucking get it

[DartmouthAlum96]

The austere perfection of physics is more beautiful than anything I've ever seen hanging on the wall of a museum.

[thrillzonevideos]

i understand the mechanics, but not the numbers

[Fibonacci1334]

wait this is mit? shit i should be able to get into this

[ullasrajchellappan1]

i have been watching his videos... i have no words to explain my appreciation for his lecture style, knowledge...and of course my appreciation of the subject itself has changed dramatically...Marvellous...yo­u are awesome Professor!!!!!!!!!!!!!

[taekwonwelch]

this dude needs to come slap 5 across the face of my dynamics professor and step into her position.

[mick23586]

what the heck, we learnt this in 11th grade & u guys teach this at engineering????

[LiquidOX2H2]

@mick23586 did you learned it with calculus???

[mick23586]

@LiquidOX2H2 yup with heavy ass calculus, while preparing for the IIT JEE

[Fibonacci1334]

@LiquidOX2H2 Im a senior in high school and im learning this with calculus.

[YesYou123333]

I had the most awesome Physics professor when I was in college. His name was Jean Lecuyer who received his doctorate from the University of Chicago. He gave a better lecture than this guy and taught me how to study as well as the ability to understand the subject of physics. Physics is not an easy subject to teach.

[quygia603]

i learned this in high school. ap physics :D

[itchy8me]

28,888 views for a subject that benefits mankind as a whole, 11 000 000 views for the "smell your own breath", thing.

WHATS UP PLANET EARTH, WAKE UP!!.

[ullasrajchellappan1]

@itchy8me i guess you know that is why our planet earth is in the state what it is now...i appreciate your thinking.

[HunterDX77M]

@itchy8me

I think its just American culture. We put more value into stupidity and vanity than we do into learning. For example, how does it make sense that a super model makes millions while a teacher educating the next generation of thinkers can't pay her own bills? I agree with you that it is ridiculous, but it is not likely to change soon without some fantastic change in events that impacts the way we see the world.

[YesYou123333]

@itchy8me Yes, and don't forget about the 79,000,000+ views for some stupid kid after the dentist. I wonder what the average IQ is of YouTube viewers.

[karlkid333]

@itchy8me It's not such a sad thing that this video gets less views. Pleasure from science is no more virtuous than pleasure from entertainment. People need to be happy, and they will achieve it legitimately by means other than science.

[TUrT1G]

DON'T DIVIDE BY ZERO

JUST DON'T

[xgamesterz]

i am so thankful for these videos. im currently receiving my education in National Junior College of Singapore, and i can say that the quality of lectures is far below par as compared to that of those in MIT. I daresay that ill benefit more from youtubing Walter Lewin lectures than attending those of my school physically

[hamzyboy]

I see he has this tipical dutch accent.

At the TUDelft they call it Denglish (Dutch english)

[usayddong]

He teaches static equilibrium so easy to understand! Thank you!

[mboromboroone]

so easy, u of t makes this stuff appear so easy.

[tkdchick561]

wow, this video really helped me review for my test and understand statics more :)

[dechicken]

6:25 that girl is beautiful. Oo

[GGRSC]

i see you post that on every lecture

[vricolaks]

omg she is VERY beautiful! can some1 give me her number pls?:)

[seriall1337]

this is like 10 years ago. What if she has put on weight? :D

[KH2083]

He has shown that Euler's belt friction formula is really practical :)

[shishikyuu]

you don't understand the difference between making sense and sophistry

[shishikyuu]

you don't even understand the difference between sarcasm and being trolled.

[shishikyuu]

being dutch myself his accent annoys the hell out of me.

[shishikyuu]

you are being silly.

everyone should talk like me. obviously. that'd be way better.

[DevilsLollipop]

This is just amazing. I'm not doing this in school because I am too young, but just listening to these lectures is stimulating. It makes me feel like I attend MIT. This is fascinating. I am forever grateful to everyone that had a hand in making these videos happen.

[priscizzzz]

OMG this is so cool!

[gofastgofastgofast]

i love MIT. Thank!

[kirpik99]

Thank you MIT