Angular motion variables | Moments, torque, and angular momentum | Physics | Khan Academy

In this video David explains the meaning of angular displacement, angular velocity, and angular acceleration.

Physics on Khan Academy: Physics is the study of the basic principles that govern the physical world around us. We'll start by looking at motion itself. Then, we'll learn about forces, momentum, energy, and other concepts in lots of different physical situations. To get the most out of physics, you'll need a solid understanding of algebra and a basic understanding of trigonometry.

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[Smmmile]

Bear in mind something can be travelling in a circle with constant speed but because its direction is changing as it travels, the direction of its velocity is changing and hence it is accelerating. So something going around a circle at a constant speed is accelerating. You might ask in which direction is the acceleration, well it's towards the centre of the circle. However if you're talking about Angular Velocity, then something travelling at constant speed in a circle has no Angular acceleration.

[nckkjohnson]

@huge youtuber and standalone educator: FYI this is the third time this video has helped me: High school, college, and now studying for a license. So... thanks. :)

[trishashrutiat]

THE POINT Y WE USE DEGRESS TO DEFINE ANGULAR MOTION WAS NEVER EVER TAUGHT BY MY TEACHER AND I USED TO BE FED UP LIKE Y SHOULD WE LEARN THIS ONLY NOW I UNDERSTAND THIS..THANK YOU
KHAN ACADEMY

[MrsCAt-vtiw]

perfectly explained rapper who make me understrand physics.lots of thx

[Funkaar_Studio]

Awesome explanation...i have never seen such a great video...u clear my concepts

[Natasha-mjii]

this channel deserves way more recognition than physicswallah

[cec]

thank you!!! you explained it so elegantly !

[Stejarulpufos]

Great info but explaining radians before actually using them would be helpful

[virupannamedikinal]

Thank you so much, it really helped me a lot

[ing.dannycolcha]

Hi! im also a physics teacher and i'd like to know what software did you use to make the animations move in real time, that would be of great help in my classroom. I highly appreciate the help, thanks!

[only_trades]

The Angular Acceleration: "alpha" 𝛂 = 1.57rad/sec ➗ 4sec = 0.3925rad/sec².


I think he accidentally divided 1.58 by 4 giving 0.395.

[qualquan]

angular (not centripetal) acceleration begins @4:46

[katlegokungoane]

I love you
Thank you ❤️❤️❤️❤️❤️❤️❤️❤️

[eseilaniw]

hello, can someone please tell me why the angular acceleration is 0 when there is constant angular velocity? if the direction is changing then shouldn't velocity (cause it's a vector) also change, hence creating an acceleration? i understand the magnitude is not changing, but not the direction part?

[khinethurein]

Is angular displacement a scalar or vector?

[quriositysquared]

You are simply awesome. Really helpful

[cheezoncrack]

I dont understand how you got 1.57 rad/second for Wf at the end