This guy and his weird pronounciation and funny examples...it's as if he knows that everyone who's watching this video is super frustrated trying to learn angular momentum. I certainly cheered up when I saw the severed hand example lol
@Zeppelinpuppy
10 жыл бұрын
Man that got complicated real fast.... completely lost
@anjelicagacayan1534
8 жыл бұрын
square = squirr there = thurr r = errah
@fallingleaveskungfu
8 жыл бұрын
+Anjelica Gacayan =D
@smklein98
8 жыл бұрын
I've learned more from a couple of your videos than I have from a whole semester of AP Physics at my high school. :) Thanks a bunch
@DocSchuster
8 жыл бұрын
+Sarah Klein Happy to help! Tell your friends. Thank you!
@jacobvandijk6525
4 жыл бұрын
And whose fault was it? The teacher's? Or weren't you paying attention?
@stevenz9176
10 жыл бұрын
i love how meters square becomes meters squer :P
@kristinaosterman28
7 жыл бұрын
This video saved my life, I feel so much more confident for my IB Physics test tomorrow now! Thank you soooo much!
@komalsanjana
8 жыл бұрын
wow finally learnt angular momentum .... thanks now I think that I will be able to tackle any questions on this topic in my exam ...THANKS Doc. :-)
@jl2you
10 жыл бұрын
Thank you Doc Physics ! I finally have understood what the angular momentum is, and means, among a ton of videos. Note : I'm french, and your english is very clear.
@justquran4043
4 жыл бұрын
My dear sir after watching many vedios about angular moment ,among of these your vedio lecture is the best and most concept clearing. I am from Pakistan
@codycheyne6951
8 жыл бұрын
Swinging it around with a "live hand." Haha! I love it!
@dudzcom
9 жыл бұрын
What is errah and squir?
@sakshamarora1594
6 жыл бұрын
Just like aarh perp, they are something valuable :D
@jarretttempleton3457
8 жыл бұрын
Instructions unclear, got my hand severed and swung in a circle.
@seamuspleau-smith4142
8 жыл бұрын
Awesome video!! love you're the Quirkiness lol i have a question for you tho... how would this apply if.... you have 2 people biking on the exact same model of Bicycle(same dimensions of wheel) at the same speed 10m/s. however person (A) is on the 6 gear and person (B) is on the 3 gear. so person (B) is peddling 2x faster/harder. what cyclist benefits from a bigger stability on his bicycle and why? hope you can help
@irfansuhaimi2082
6 жыл бұрын
Tq sir, U make it clear for me, wish all the best for you 😉😉😉
@misssweethearted
10 жыл бұрын
hahahaha "squrrr"! I love his energy, he's a great lecturer, really entertaining
@eastonkapelus6981
Жыл бұрын
great video, thanks!
@nicemoinertekdhaka7056
5 жыл бұрын
very important & very nice
@Nellak2011
8 жыл бұрын
I don't quite understand it yet, but from what I gather, it should be with respect to time. I need to research rotational physics...
@me438
11 жыл бұрын
You sir, are amazing.
@MuhammadSaleem-id3vi
Жыл бұрын
Very good Demo by you 💐💐💐💐💐💐💐💐💐💐💐💐💐💐👍👍👍👍👍👍👍👍
@antgamble
11 жыл бұрын
Great video
@TrueBlackHistory101
4 жыл бұрын
So why do moons/stars spin backwards creating an angular problem?
@Christina-ds7qk
10 жыл бұрын
a severed hand?!?! loolool whhatttt
@Lexyvil
7 жыл бұрын
Great video! It's really helping me prepare for my physics exam! Also, at 7:40, why is the torque positive instead of negative when the hammer goes counter-clockwise?
@DocSchuster
7 жыл бұрын
Thanks! That's the definition for torque. CCW is positive.
@DeepakKumar-fi4os
Жыл бұрын
@@DocSchuster hey dude I'm from future how's your life going ?
@BlakeCreate
7 жыл бұрын
dang it...you seem like a great teacher...however I was looking for Mechanics 2 Dynamics Angular momentum and impulse
@sandhyashourie8731
6 жыл бұрын
Historical event .. At 2:50 doc pronounced r correctly. . . Again after some time he pronounced r correctly. WOW!
@MaxOnTrack
10 жыл бұрын
You're barking mad but it makes so much sense!
@DocSchuster
10 жыл бұрын
Thanks, Max! It's surely a sign that you're crazy, too, if this insanity benefits you.
@JohnnySon1301
10 жыл бұрын
5:23... Finest looking piece of paper I've ever seen ;)
@AlchemistOfNirnroot
9 жыл бұрын
Is r a distance or is it displacement (you denoted it with a vector arrow).
@andrewdupree8947
4 жыл бұрын
When you derived L = Iw into L = mvr, does that work 100% of the time? Because I isn't always equal to mr^2. You'd have to use the parallel axis theorem to figure it out.
@carultch
2 жыл бұрын
I=m*r^2 is a special case of the formula for moment of inertia, when you have a point mass. It also applies for a thin uniform hoop, about its axis of circular symmetry, because all mass is at the same radial position from the axis of rotation. If you have another shape, you have the distribution of mass to account for, as not every particle in a rigid body moves with the same linear speed, or at the same radial coordinate from the reference axis. In a rigid body, v=omega*r holds true, where omega is a uniform value for the whole body, and v and r vary, when r is relative to a point called the instantaneous center of zero velocity. Given the velocities of two points on a rigid body, all the rest of the velocities are dependent on these two velocities. A system of individual particles is a summation of m*r^2 for all the particle masses and radii relative to a reference axis. A continuous rigid body will have its moment of inertia calculated as integral r^2 dm. All the moment of inertia formulae you see in your textbook, are calculated from this integral.
@arbadon
9 жыл бұрын
I'm doing physics while I should be getting ready for new year's eve, on purpose.
@DocSchuster
9 жыл бұрын
ralph houthoofdt Arbitrary cultural celebrations should always take a back seat to the study of the fundamental laws of the universe. Unless there's a lady involved. Did you find someone to kiss at midnight yet? Once you've got someone lined up, you can get back to work!
@muthukrishnan-zs9et
6 жыл бұрын
if i is the moment inertia and e is kinetic energy , what is angular momentum
@shahfahad4355
6 жыл бұрын
sir why we take tengential velocity in equations???
@MrJudaculla
10 жыл бұрын
M times V! I have that song and LOVE it. My physics teacher doesn't think that playing songs helps teach concepts, though. It's super disappointing.
@DocSchuster
10 жыл бұрын
A Thousand +1's! I seriously know of no one else in the world who knows that song!
@anilsharma-ev2my
3 жыл бұрын
What is tangential ratios of angular momentum and rotate movement❓❓❓
@dantkillmyvibe
10 жыл бұрын
What is the name of his last prank movie again?
@ArchieLuxtonGB
10 жыл бұрын
Kilogram-metre-squrr
@edwarddimaculangan131
9 жыл бұрын
if you are riding on a big turning table and you crawl at the edge, would your turn decrease or increase ?
@DocSchuster
9 жыл бұрын
Jed Dimaculangan Love it. What do you think is constant in such a situation?
@ennfuture3340
8 жыл бұрын
+Doc Schuster my weight
@carultch
2 жыл бұрын
@@ennfuture3340 Yes, since not otherwise specified, your weight would be constant. But what other quantities remain constant in the situation of a person crawling around on a big turntable? Think of quantities in Physics that are conserved.
@spencerstarrr
4 жыл бұрын
what does he mean by the term “normal distance” when describing r (perpen)?
@carultch
2 жыл бұрын
"Normal" in this context means perpendicular.
@grahamflowers
Жыл бұрын
There is no kinetic energy in a moving mass there is force Mv squared kinetic energy is the energy of consistent work from a consistent force regards Graham Flowers
@binteislam5601
3 жыл бұрын
Nice
@richardsaunders531
10 жыл бұрын
you need to get yourself some of that brown roll out paper that they all use.
@shantar3608
10 жыл бұрын
this guy and his sound effects, and what is squrrr?
@CasusUniversum
10 жыл бұрын
ara squrrr
@emptyblank9943
8 жыл бұрын
isn't the direction of angular momentum perpendicular to both r and v? as you said it paralells to velocity. sorry if i miss any concept
@DocSchuster
8 жыл бұрын
+Empty Blank That sounds like a mistake. There is certainly a cross-product in there, as you indicate!
@emptyblank9943
8 жыл бұрын
+Doc Schuster thanks a lot love ya video :D
@uezra72
9 жыл бұрын
SQURR
@derek168168168
9 жыл бұрын
why the unit of angular momentum doesnt contain (rad) which should be in the omega (rad /sec)?
@navets99
9 жыл бұрын
because omega=velocity/r, and the unit for that is m/s divided by m, which equals 1/s , so if you calculate angular momentum as L= moment of inertia (I) times angular velocity (omega), you will get (kg x m squared) x (1/s), which in the end equals (kg x m squared)/s
@lakshmamanv7936
6 жыл бұрын
super super thanks
@reyrey389
9 жыл бұрын
How does the bullet have angular momentum if its going in a straight line path and not spinning
@DocSchuster
9 жыл бұрын
***** This sounds crazy, right? But since L is defined about some axis, it would be a very useful definition if the bullet were about to collide with a block of wood on a fixed axis. If the bullet's velocity vector did not point at the axis directly, the block would spin. You would be able to find its rotation by conservation of L! For the win!
@AlchemistOfNirnroot
9 жыл бұрын
Doc Schuster If the sun disappeared the earth would continue to travel along its tangent. But since the angle is getting smaller, the velocity component goes down whilst the radius increases. These cancel each other out and therefore Angular Momentum is conserved?
@shahfahad4355
6 жыл бұрын
sir another question.... sir what is mean by L=r×p
@carultch
2 жыл бұрын
The "x" refers to a cross product. It is a method of multiplying two vectors, in a manner that is greatest when they are crossed (i.e. perpendicular), and generates a third vector that is perpendicular to both of them. Look up the term "cross product" for further detail. L is the angular momentum, the quantity we are defining here. r is the radius vector from a reference axis to the particle in question p is the linear momentum (mass*velocity) of the particle in question
@allahnbirkulu4238
5 жыл бұрын
Güzel video
@biggbuck9535
5 жыл бұрын
Why are we *squaring* the meters in linear momentum?
@carultch
2 жыл бұрын
It isn't linear momentum. It is angular momentum, which is radius vector from a reference axis cross product the linear momentum. There already are meters in the units of linear momentum, and cross producting with a radius puts another meter unit in the numerator.
@anilkumarsharma8901
2 жыл бұрын
movementum loss of anything ??? in terms of energy
@robhousehold
4 жыл бұрын
7:46 Hmmmhmmm That's a thick a$$ bullet. Dr. D Statics
@Garen1
6 жыл бұрын
When u got a brain, capable of vast imaginations, but you decide to make ur particle a severed hand 😂👌
@anilsharma-ev2my
3 жыл бұрын
What's different ratios between angular and linear momentum 🛐🛐🛐🕉🕉🕉
@diegoforlan4044
8 жыл бұрын
The apple is going like.. 11:34
@Kurmi83
9 жыл бұрын
is moment of inertia,I =1/2mr^2?
@sneaxanuj3927
5 жыл бұрын
Nope only mr^2
@carultch
2 жыл бұрын
The leading factor on moment of inertia formulas depends on the specific shape and the distribution of mass. The 1/2 factor is what applies to a uniform solid cylinder about its circular symmetry axis. For a thin uniform hoop, the moment of inertia equals m*r^2. For a point mass, the moment of inertia is m*r^2.
@lachimolalalala7775
7 жыл бұрын
I thought moment of inertia (I) = 1/2mR^2 But why didn't you plug 1/2 in that formula?
@DocSchuster
7 жыл бұрын
Why did you think that? Got a textbook?
@lachimolalalala7775
7 жыл бұрын
My bad. I was confused because I just started to learn physics. But I got it now.
@carultch
2 жыл бұрын
@@lachimolalalala7775 The leading factor on moment of inertia formulas depends on the specific shape and the distribution of mass. The 1/2 factor is what applies to a uniform solid cylinder about its circular symmetry axis.
@LimosRock1
10 жыл бұрын
Leon Schuster is very cool
@jimtrueblue99
9 жыл бұрын
What and why is there distracting noise in the background?
@DocSchuster
9 жыл бұрын
jimtrueblue99 GRRRR!!! I hate that, too!
@Nellak2011
8 жыл бұрын
angular momentum is the indefinite integral of torque.
@DocSchuster
8 жыл бұрын
+Connor Keenum ...over time or angle?
@carultch
2 жыл бұрын
@@DocSchuster Over time. Integrate torque relative to angle is rotational work. It also turns out that angular momentum is not just the indefinite integral of torque d_time, it is also the definite integral of torque d_time, when starting at rest.
@dantkillmyvibe
10 жыл бұрын
he has movies!!! its super funny...
@misssweethearted
10 жыл бұрын
why's v = wr?
@DocSchuster
10 жыл бұрын
omega is 2pi/period, so I'm just saying the speed is circumference over period. Thanks for watching!
@yoxiyogaming
6 жыл бұрын
I thought I learned angular momentum, but now, not anymurrrrrrr.......
@ourtube4266
7 жыл бұрын
You sound like you're from St. Louis.
@DocSchuster
11 жыл бұрын
Is he cool? Sure sounds cool...
@PanchoThompson
8 жыл бұрын
SQUIRREL!!
@mings6744
9 жыл бұрын
no u cnt teech u dun even wryt with left hand lolz Just kidding, nice presentation & points for style. Are you an actual doctor?
@DocSchuster
9 жыл бұрын
Ming's Yep. PhD in solid state physics, Washington University in St. Louis, 2007. Good times. Thanks for watching.
@markhuru
Жыл бұрын
Gravity does not exist, angular momentum is what causes all “gravity effects” we assume that air -space has no mass, the earth is special, our atmosphere in combination with angular momentum around the sun has created a vacuum, making mass heavier. Think how airplanes fly the wings have up draft because it’s pushing thru air. Think of air like a lighter form of water. In space there to is air just no vacuum effects , a brick falls same rate as a feather. The rotations of planets are angular momentum.
@its_not_lux
9 ай бұрын
First of all what are you saying??? Your syntax is completely incomprehensible, try conveying your point across better. Anyways gravity isn't caused by angular momentum. General relativity explains that matter (or more correctly the energy-momentum tensor) causes spacetime to have curvature. If no external forces act on a test particle then it will follow the straightest possible path through spacetime, called a geodesic. This may be a curved path through three dimensional space but it is a geodesic nonetheless. The gravitational force is a consequence of this. Gravity is completely a geometric property of spacetime. If anything in cases like the roattaion of the planets gravity is what causes the planets to have angular momentum, not the other way around.
@markhuru
9 ай бұрын
@@its_not_lux space time ? General relativity? We are talking about things guessed upon in a time when math seemed to answer such questions. Point being is that planets are all on sort of spinning rotational path. Thru a medium that is endless . What is up or down in an environment which seems to have no boundaries? Angular momentum is gravity. Although angular momentum like gravity cannot be understood. We do not yet have the means. Black holes are still a hypothesis. If the earth wasn’t spinning we’d fall off, so why can’t we suppose that in spinning experiments where there is stability can we not think we are nothing different. Bottom line gravity cannot be called a force if no one knows what gravity is?
@pr1yanshu
6 жыл бұрын
squrr,arreh. ; )
@armageddon.4488
6 жыл бұрын
What's up with yo left thumb?
@alchemy1
5 жыл бұрын
You lost me with the value/unit of [L] as being Kg*m2/s. Are you saying [L]= Inertia divided by time? Because that is not right. Shouldn't [L] be Inertia (kg*m2/s) * angular velocity(m/s.)? Unless [L] is different than L vector ( momentum) and it is different than L ( plane L). I don't have victor sign on my keyboard. I don't think I do.
@carultch
2 жыл бұрын
L is angular momentum. It is equivalent to moment of inertia (units of kg-m^2) * angular velocity (radians/second). Radians are considered dimensionless units, that don't end up needing to be written when combining with other units. It is only correct when your angular kinematics terms are in units based on the radian.
@SreekantShenoy
7 жыл бұрын
yea.. sqiurrr
@cortexeducacao6220
9 жыл бұрын
squr
@biggbuck9535
5 жыл бұрын
Why does no one ever explain why we SQUARE the meters? It's so annoying.
@carultch
2 жыл бұрын
Because we have both r in meters, and v in meters per second, in the formula for angular momentum. Both have meters in the numerator.
@SarahMottram
8 жыл бұрын
skwer
@Gigi-pl5my
7 жыл бұрын
hhahaahahahaha im crying... squir?????
@DocSchuster
10 жыл бұрын
You must be joking!
@gendyabood
6 жыл бұрын
Squirrel
@SarahMottram
8 жыл бұрын
arra
@SB-mt2bc
10 жыл бұрын
mmmmm... squrrr
@ciisedhenged3237
7 жыл бұрын
all thanks to Allah, who made as Muslims, and gave as the ability for thinking about the world and how it goes.
@carultch
2 жыл бұрын
Thanks to Al Khwarismi, the father of the Algebra we use today.
@apurupamargapuri4192
6 жыл бұрын
Squrr
@ginismoja2459
5 жыл бұрын
I've no idea what you're on about
@shakirzib4503
7 жыл бұрын
tarnslint into hindi plase
@rachelg6524
5 жыл бұрын
Is this English
@carultch
2 жыл бұрын
Yes. Just with a very thick accent that exaggerates features of English that stand out when heard by people accustomed to other languages.
@md65000
6 жыл бұрын
Really, a severed hand? Are high school students so brain dead now you have to do that to keep their attention? SMH
@CindycindytofuTo
8 жыл бұрын
What does he mean by the term "normal distance" when describing r (perpend)?
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