Atwood's Machine Problems

[genkers]

what if i dont know the forces pulling on it?

[finom97]

@genkers He was assuming the gravity was 10 m/s^2,

so 2kg had a force of 20 N, 3 kg, had a force of 30 N

[CessnaToBoeing]

@genkers You could also use the general case, where Fg = mg. You'd get the same result through variable terms (even for the tension) after a little bit of algebraic simplification.

[Inggybaby99]

OHMYGOD!!! This is like the best video ever ! I have my physics final in a few days and you are a lifesaver! thank you so much! xD

[icepenguin2468]

I love you- thank you so much

[badhrinarayanansures]

hey dude,,,i understood everuthing,bt i couldnt understand y r u putting 20n-ft =2m/s square.....becoz before dat u put, ft - 30n = 2m/s square

[pierresstargirl]

finally, I understand how to do these problems :D

[jityr2]

At 0:58 it's easy to assume that the acceleration would be greater for the system on the right because m1 is on a level surface instead of hanging down. The system on the left has m1 hanging down., which makes it easy to assume that the acceleration would be slower. Would such assumptions be right?

[NationalPro]

'mmkay' lol

[ymxyy0313]

how did he get the 20n and the 30n, or did he jsut make that up?

[coyotehunter118]

@ymxyy0313 i think he is stating that the acceleration of gravity is roughly 10m/s^2 so the resulting force is 20N and 30N repectively

[euquerohotidogi]

@ymxyy0313 he multiplied the mass x gravitational force = 2 * 10 and 3 *10

[GodlessNfree]

Nice vid but i got a question i cant seem to figure out... so for my questions the givens are m1=5kg Ft= 78.4 and a=5.9m/s the unknown is m2.. it seems so simple but i cant get it together, think u could give me a formula??

[aceofspadesz]

u pwn my physics teacher

[HabeKeinMitleid]

@aceofspadesz Luckily, my physics teacher is about as good if not better than this guy, however... I like having 2 different explanations for the same thing. So I love them both equally.

[yamimakaiz]

i totally needed this for my physics class today! thanks so much!!!

[anewman644]

kool

[PoohTech90]

Thanks Lasse Viren...it helps a lot!!!

[cuadfromts]

ty

[donepearce]

What is the value of g where you live? It seems to be quite a bit different round here.

[razumnyr]

Thank you so much!

[MyBrokenBrick]

he sounds like brain from pinky and the brain dude!!! thanks your a great teacher!

[sprocket609]

Thank you so much! my teacher didn't explain this type of problem very well. I'm not confused any more!

[Paivimehr]

Clear explanation. Thanks. Like Lasse Viren. I am from Finland..

[mikeyjz]

giggity

[41xUnderclass]

thank you!

[toaotou]

the introduction is a bit long

but the later explanations are really clear! thanks a lot