Lec 18 | 8.01 Physics I: Classical Mechanics, Fall 1999

[nealogz]

I hope I'll be as intelligent as him in Physics,

[RespectMyHate]

This guy has been doing physics for way to long.

[jojjo223]

WTF......i was looking for grade 9 level ionic compounds (formula's)........i did not need this

[MrDanielMaciag]

yawn, physics is so easy at this level.

[wassimibrahim84]

Guys in minute 31 in this lecture, he was writing conservation of energy:

KA + UA = KB + UB = KC + UC

he said that UB = - 1/2 KX^2 ?? When the negative sign??

[patt507]

@wassimibrahim84 it is negative opposite direction man, pushing forward is positive

[HunterDX77M]

:-)

Half-way through the lectures.

[HunterDX77M]

:-)

Half-way through the lectures.

[samuel91222]

" which the mathematicians cant do, but the physicists can."

"I hate this. things I cant explain, I hate them."

[WoodWalkerI]

1=15

[Diemedes]

I just hope people would stop trying to downgrade MIT by saying they've had all this in high schools of their respective countries. As if we all don't know which country is holding the sceptres of scientific advance and research.

[Squatchmichael]

@Diemedes THANK YOU. I get really fatigued from hearing people claim they have done this in High School.

It is one thing to passively observe physics as a spectator, then claim triumphantly that "I knew it all along". It is another to sit down, independent Prof. Lewin, and do these problems with high success on your own.

American graduate schools are still among the BEST in the world, despite our high schools sucking; I am cynical that these posters could argue with that.

[Diemedes]

@Squatchmichael

No need to thank me, just pointing out the facts. I think that it's hypocritical for people to blame the USA for everything, yet gladly accept the technology and lifestyle they offer us.

Now when it comes to Science, American Universities are the best in the world. And they're not the best for nothing. If all other countries where so advanced on their curriculi (as boasted by many), then their respective Universities would be No1. It's as simple as that.

[TheZanipolo]

Boring, trivial examples -- surely this sort of thing is done at school, rather than university?

[Squatchmichael]

@TheZanipolo MIT has produced the best physicists in the world. Trivial to who? These are undergraduate classes taught to kids fresh out of high school, and you can bet your children's souls that the tests and homework are challenging.

Challenge for you: sit down and derive some basic properties...for example, using energy conservation alone, show that a solid conduit under deformation should respond as a simple harmonic oscillator. Not trivial to do, wise ass.

[TheZanipolo]

@Squatchmichael I'm aware of MIT's reputation - I can only assume the undergraduate physics course is very long indeed. As for deforming solid conduits to get a simple harmonic oscillator - this phrase of yours is meaningless rubbish

[Squatchmichael]

@TheZanipolo

It is a common physical model...and, way to be an unjustifiably arrogant blow hard. Here is my example of a "solid oscillating as a harmonic oscillator":

ess.washington.edu/~joshuadc/s­ciencelit.html#C6

And download the "Resonance of a Fluid Filled Conduit" paper.

And you can look in the volcanic seismology literature too. There are plenty of examples there.

[TheZanipolo]

@Squatchmichael you're talking shite again - please seek psychiatric help. Thank you.

[Squatchmichael]

@TheZanipolo How is me illustrating a derivation of a model from first principles using physics and elasticity talking shite? I proved my point MATHEMATICALLY. Did you look at my paper?

The funny thing about the internet is that everyone else thinks they are an expert, more so than those of *us* that have graduate degrees in the physical sciences, because they can passively watch a few videos. If it is above your head, don't judge.

[electronikita]

Conversnativespeak Judging from your reply I believe that you might actually be in the "special" class with all the other "special kids" whom you feel so so sorry for=) These are BASIC, EASY EXAMPLES, just so you understand the concept. Trust when they say that if you actually ever happened to see an actual MIT "fiziks"(lol) exam you would, most certainly, lose your will to live. And yeah @devilzeezoo  I offer you a cookie, relax child

[626718]

@Conversnativespeak

u r an idiot. This is just the lecture, have you taken an actual MIT midterm? U probably will faint when u see the actual exam questions!

[anasssky]

if only he was my teacher

[devilzeezoo]

i wish he was my teacher and i am only 14 years old and i am taking this

[amrosik]

i finnished course 8.02 with 14 years.

[mustafaalafif]

@devilzeezoo ... Some1 please offer this man a cookie.

[IBYea]

That top is freaky. What the heck is in that black box?

[CrazyScience]

Battery, transistor, coil... it gives impulses to the rotating object when approaches center of that top. Inside rotating object is little magnet, which trigger transistor, transistor put short pulse into coil, and that coil give little bit of a 'kick' to that rotating object - so that object never stops until battery is empty (then rotation die too).

[nosojdjos]

has anyone taken this exam ?

[CarnifexAaron]

so many great minds in our world.

[foadsharifi]

he is the best, i wish my teacher was like him.

[kobolt0000]

i wish i could have a chance to get a education at MIT, but im not a 4.0 kind of guy

[EmoticonProductions]

A fifty minute vid D:

[blitxo]

Wow he actually went back and found his mistakes.

[platinumketo]

wonderful resource on youtube,,,his lecture really helped me a lot,,,i would have surely failed if i hadn't found his lectures just abt some hours before exam!!

[johnhasaname]

this is a great class.I can actually understand all his talking about......NICE!!!!he sure can teach mathematical physics.

[eatadick1]

Wonderful material as always. Having this on youtube makes my engineering physics professor at USF look like a joke.

[regginscanjump]

Ya if my prof taught like this i might actually pay attention in class.

[ThomasCountz]

I would be scared to take this exam...