Rotational Motion

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Күн бұрын

053 - Rotational Motion
In this video Paul Andersen explains how a net torque acting on an object will create rotational motion. This motion can be described by the angular displacement, angular velocity, and angular acceleration. The linear velocity can be calculated by determining the distance from the axis of rotation. The net torque is equal to the product of the rotational inertia and the angular acceleration.
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Music Attribution
Title: String Theory
Artist: Herman Jolly
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All of the images are licensed under creative commons and public domain licensing:
“Moment of Inertia.” Wikipedia, the Free Encyclopedia, September 7, 2014. en.wikipedia.org/w/index.php?t....
“Radian.” Wikipedia, the Free Encyclopedia, September 6, 2014. en.wikipedia.org/w/index.php?t....

Пікірлер: 148

@HobosoftheWorld 8 жыл бұрын

I think I learned more in this one video than in the ~20 hours we spent on this in class.

@HM-rc7nn 9 жыл бұрын

WHAT A GREAT TEACHER HE IS !!!!!!!!!

@ShamsThoughts 8 жыл бұрын

You are a life saver. i have my final exam tomorrow and never thought that one day i would understand physics ;) THANK YOU SO MUCH!!!!

@simrankulkarni7895 8 жыл бұрын

wow! he's a really good teacher. This video was very helpful.

@ethanperez9474 7 жыл бұрын

this dude taught me more in 10 minutes than my physics teacher has taught me all year

@davidbuderim2395 9 жыл бұрын

Enjoying this series very much. Dark Side of the Moon is my favourite album of all time - shocked and delighted to see it.

@edmundshumway3869 6 жыл бұрын

The animation about radians was easy to understand and was a great tool.

@jameserayburn 6 жыл бұрын

This is the best video on angular velocity I've seen. Two big thumbs up to you sir.

@mrzues7260 7 жыл бұрын

Great video. Thanks a bunch and keep making videos! You are helping a lot of people whether they say it in the comments or not.

@BangMaster96 7 жыл бұрын

I wish colleges would test teachers based on how well they can teach not based on how much they know about a certain subject because my physics professor is very knowledgable about Physics but is complete garbage when it comes to teaching it So Universities, start hiring teachers who can f**king teach

@lingkejiang9244 7 жыл бұрын

They wouldn't do that because if they hire professors that could teach (who are always less likely to be capable in research) they wouldn't earn so much money and reputation

@joshuapfingerle4704 3 жыл бұрын

@@lingkejiang9244 Ding ding ding! We have a winner! Most of the time, universities are for the money/prestige aspect, and the actual education aspect comes in a very distant second. I don't normally swear, but I feel strongly that it's complete bullshit if you ask me, especially, and I mean ESPECIALLY because they charge you money for your so-called "education" which could be done much better at your local library, and it's not a light amount either.

@srirampatnaik9164 3 жыл бұрын

Wait? This is a college-level course? I thought AP was high school stuff.

@joshuapfingerle4704 3 жыл бұрын

@@srirampatnaik9164 I believe that he is not referencing the video, but rather his general experience/knowledge.

@nilphilodox5759 2 жыл бұрын

@@srirampatnaik9164 You learn the same material in physics 1 in college which is equivalent to Ap Physics 1. The only thing that is different about college is that the professor can't teach shit but you are still expected to do good.

@evanryan4137 8 жыл бұрын

Why do i even go to college when i learn everything from youtube

@koda1082 8 жыл бұрын

Colleges give you the connections to internships, research opportunities, fellowships, and jobs, but college makes you learn independently.

@lingkejiang9244 7 жыл бұрын

College sucks

@JimmyCrust 7 жыл бұрын

well most of the jobs people apply for regardless of diploma don't actually need one

@joshuapfingerle4704 3 жыл бұрын

@@JimmyCrust THIS. They even told me while I was at a well known college (New England Tech) that most employers don't care about your college - it's more about who you know or your experience.

@ploypins 7 жыл бұрын

This is what i was looking for. You have answered every questions i got. thank you so much.

@kirillkondrachov4864 8 жыл бұрын

Can I have you instead of my current physics prof?

@lingkejiang9244 7 жыл бұрын

No, not even a chance

@jeenas1567 5 жыл бұрын

Same here

@hamzabahi6720 5 жыл бұрын

﷽ ﷺ ﷺ

@aleksakaric1450 4 жыл бұрын

Same here. I sometimes wonder what’s up with most physics professors.

@hebaahmed4279 9 жыл бұрын

Thank you very much for the concise and clear explanation.

@LinkLegend0 6 жыл бұрын

You are an excellent teacher sir. Thank you for your effort, you help me alot.

@HeadwatersAcademy1 9 жыл бұрын

Great explanation, thanks for posting the videos.

@heathersong104 7 жыл бұрын

I normally watch your lessons for chem and bio. It's amazing that you can even do physics !!!!

@phuzo3320 5 жыл бұрын

No one can explain this topic better than u....... Superb

@streetrypper9961 7 жыл бұрын

I am a senior in high school (Neville) and I found this video to be extremely helpful

@nadezhdadimitrova4042 8 жыл бұрын

Very nice, thanks!. Wonderful simulations and explanations.

@MrMarkgyuro 4 жыл бұрын

i just study physics as a hobby. Your animations really makes easier the understanding of the theories.

@lizzyberg1082 7 жыл бұрын

thankyou soo much!!!Amazing video and superb animation!!

@zboy303 9 жыл бұрын

Love your videos, although I'm a bit thick, so I have to keep pausing and rewinding to get it :)

@PaKiKiNg908 7 жыл бұрын

You are Awesome Mr. Anderson!

@danieljoseph6404 7 жыл бұрын

thanks a lot for this video sir it made me understand the concept pretty well :)

@lucywang2716 8 жыл бұрын

love the examples

@lucferahikari450 7 жыл бұрын

I respect you. you are doing a very good job keep it up....

@jimbocontaoiraguro9057 9 жыл бұрын

Thank you for this kind of tutorial, it would help on my reporting :D

@searleashlee 6 жыл бұрын

Good work Paul

@cheetah1347 7 жыл бұрын

Best chanel for physics lectrues.

@starwarfan8342 5 жыл бұрын

Saved my ass in AP Bio, and you're still saving it now...

@user-uw7nh2sz4t Жыл бұрын

it was really helpful , would love to watch more to burn the desire of curiosity .

@imo0ods7 9 жыл бұрын

you are the best!

@prime3333 4 жыл бұрын

great video!

@Kyrowebb 7 жыл бұрын

Very very helpful thank you so much

@ItsGordo2 7 жыл бұрын

Very helpful thank you!!!

@daniloorbolato 7 жыл бұрын

amazing video. thank you!!

@flowerchild7471 8 жыл бұрын

Thankyou so much for your videos your amazing

@reginaong05 2 жыл бұрын

You teach a lot better than my current science teacher THANK YOUUUU

@thecerebrum. Жыл бұрын

Helpful. Thank you

@globalteacher_amai Жыл бұрын

You’re so awesome!

@BRUZBARILARO 7 жыл бұрын

this will help me in my final exam thank you so much

@k.chriscaldwell4141 3 жыл бұрын

Excellent. Thanks.

@mujahid4764 3 жыл бұрын

Always the best

@76354542q Жыл бұрын

My class liked this.... Thank You :)

@hussamalshammari4705 8 жыл бұрын

very good explanation

@countryside6550 3 ай бұрын

great video

@richbeyer1269 4 жыл бұрын

Thank you so much you're a lifesaver

@hennree 9 жыл бұрын

Thanks.Explained very well and in detail

@nauteeq 9 жыл бұрын

Guy, you gats obtain PHD for this physics something, o. Any chance I receive lecture from you?

@sheikmuhammadali2717 6 жыл бұрын

Great video...thank u so much....

@priyadarshanishendage698 6 жыл бұрын

U r doing grt job

@amrutvani2 10 жыл бұрын

Mr Anderson u r great.Very nice clip. One question ? Why the direction of angular velocity is perpendicular to the plane of ur vinyl record ?

@chetanbavaskar4364 8 жыл бұрын

best one i have ever seen ..:)

@girirajkashyap2912 3 жыл бұрын

Excellent 🙏

@2ksy462 7 жыл бұрын

gr8 explanation!!

@ahmedqaysib 8 жыл бұрын

this's very good

@apoorvagopal5023 7 жыл бұрын

thx a lot..that was helpful for sure

@alexdyck9355 7 жыл бұрын

Thanks it helped. Also, thanks for adding subtitles

@alexdyck9355 7 жыл бұрын

I also like that you explained it very quickly, it makes it much easier to cram lol

@jeffpirog9939 2 жыл бұрын

Super helpful

@abhishekchatterjee7184 3 жыл бұрын

Very nice.

@serinatsuki9511 9 жыл бұрын

Cool thanks but does the rotational speed of an object on a turntable increase or stay the same as the object moves further away from the center of the turntable?

@zerui8437 8 жыл бұрын

Thankyou very much, I am still working on this.

@technotux7835 2 жыл бұрын

2 masses on a spinning table one is heavier than the other, which mass will move farther from the centre?

@diribagonfa4884 7 жыл бұрын

good explanation

@littlerabbit7857 Жыл бұрын

It helps me understand.

@dommarajubhaskar3526 4 жыл бұрын

Thank you sir

@akhtarhussain3263 8 жыл бұрын

Thanks for explanation

@sumitshah8071 9 жыл бұрын

It is amazing

@mooly15 9 жыл бұрын

THANK YOU !!!!!!!!!

@Marwan4EM 7 жыл бұрын

Subscribed.

@lizzyberg1082 7 жыл бұрын

amazing!

@mathalgebraicalculus6325 2 жыл бұрын

Thanks man

@mvfazio 9 жыл бұрын

Question: For the demo with the mass tied onto the PVC pipe--I understand that the one with the mass on the end has a greater rotational inertia, but at the same time isn't there more torque applied by gravitational force when one has more mass concentrated farther from the axis of rotation? I'm having trouble justifying these results, but I repeated the experiment and got the same thing as you.

@joshuapfingerle4704 3 жыл бұрын

I believe how it works is that the gravitational force works equally downward on all points in the object/system of particles, so the torque doesn't really matter because the fact it is equal all over cancels it out - usually torque only causes a rotation if one spot has extra force compared to the others, for example by pushing hard on the edge of a door opposite to the hinges, but all the rest of it has no force applied.

@diagotorres4094 8 жыл бұрын

damn good explanation

@cpratham3 8 жыл бұрын

thanx sir!

@suzy6499 6 жыл бұрын

wow he is a good teacher

@wishdoom 8 ай бұрын

good point

@Alia-rw9ti 8 жыл бұрын

Thanks much!

@ericsung14 7 жыл бұрын

Thank you

@sidhart6744 6 жыл бұрын

You da real mvp

@YawnGod 9 жыл бұрын

Cool.

@user-um9sl1kj6u 11 ай бұрын

This kind of reminds me of so I can take fly wheels, and also giant rotating magnets, which essentially are at the center of planets and stars. They have the size and torque necessary in order to generate those huge magnetic fields that extend outward

@amoreno830 9 жыл бұрын

Thank you!!!!!!!!!!!!!!!!!!!!

@adosar5414 6 жыл бұрын

what is the centripetal force in a rolling disk? the net intermolecolar forces for every "molecule" of disk? thx in advandance

@joshuapfingerle4704 3 жыл бұрын

Centripetal force = mass * centripetal acceleration (Newton's Second Law formula), where centripetal acceleration = linear/tangential velocity times itself (squared) divided by the radius of the circular path you are following.

@Mech.Masters 8 жыл бұрын

Let us consider a round plate mounted on a bearing. If the mass of the plate is m kg and it has a diameter of d mm. How do I calculate the torque required to bring it in motion?

@joshuapfingerle4704 3 жыл бұрын

The formula you would use is torque = linear force * distance (radius) of linear force from center * sin(angle between these two variables), so you would have to figure out the acceleration first as you don't have enough info as is, then use the formula F = ma to get the force applied on the object, then divide d by 2 to get the radius, and then finally use the torque formula described above

@peterstewart1491 4 жыл бұрын

At 6:51 how'd you go from rad/s * m = m/s, seems it should read = rad*m/s

@khadijah.b5326 5 жыл бұрын

Please how did you get the 3.49 rad for the velocity?

@ameerhamza4816 5 жыл бұрын

He converted revolution to radian

@khadijah.b5326 5 жыл бұрын

Thank you

@HM-rc7nn 9 жыл бұрын

plz give me some tips how can I manage my Science ? I am weak in physics. You are a GREAT TEACHER.

@prasannafernando704 7 жыл бұрын

thanks

@ahmadsasi4737 6 жыл бұрын

Thanx

@wingsorflys 7 жыл бұрын

In rotational motion what is lamina

@glitch2.087 5 жыл бұрын

Omg ....ur great 😚😚

@gingerninja117JD 7 жыл бұрын

at 8:55 you say the lighter object has less rotational inertia and thus has a lower acceleration than the more heavy object, surely it would have a greater acceleration because it hits the ground first???????

@appleseed3456 3 жыл бұрын

I had the same question. Wouldn't the lighter pole have a greater acceleration since the force (gravity) is the same for both poles, but the lighter pole has less inertia?

@vish4544 7 жыл бұрын

Haha pink floyd, what can stop me from subscribing to you now? 😸

@jitendrareddy.k8245 4 жыл бұрын

it's better when compared to all,up to now

@wizardhunts8078 2 жыл бұрын

1:22 If we apply a force *TO* a mass, we get acceleration. I believe you said "Force * mass = acceleration"

@naeemghafori5046 8 жыл бұрын

isnt hollow object have the greater inertia i was waiting for the green one to go down fırst

@ganeshbhanare1087 6 жыл бұрын

I am the unserstand the Chapter ROTATIONAL MOTION Thanks sir you are very gorgoius sir

@Kanzaki-desukedo 4 жыл бұрын

It took 10 minutes for me to understand what I couldn't understand in a month

@adrianhoward-larsen2291 8 жыл бұрын

OK so I'm trying to figure out how an object can move at the same speed and yet be able to cover bigger distances in the same time, such as what he demonstrated in this video