Circular Motion - Physics 101 / AP Physics 1 Review with Dianna Cowern

Рет қаралды 150,500

3 жыл бұрын

Lesson 7 (Circular Motion) of Dianna's Intro Physics Class on Physics Girl. Never taken physics before? Want to learn the basics of physics? Need an AP Physics 1 review before the exam? This course is for you!
Exercises in this video:
Problem1: You have a one kilogram ball on a two meter long string. You swing it in a circle so it goes around once every two seconds. What’s the tension in the string?
Problem 2: What is the magnitude of the centripetal force keeping the Earth moving in its orbit around the Sun?
Problem 3: The coefficient of friction between tires and the road is about 1.0. At what angle should we bank our road if the average speed of cars driving on the road is 80 km/hr? (Don’t forget to convert to m/s!)
Thank you to Derek Muller from Veritasium for his incredibly kind shout out at the end of the video, and for encouraging people to pursue physics! And thanks to Lizzie Armanto for letting me use her footage!
Credits:
Dianna Cowern - Executive Producer/Host/Writer
Jeff Brock - Lead Writer/Course Designer
Laura Chernikoff - Producer
Victoria C. Page - Video Editor
Sophia Chen - Researcher/Writer
Erika K. Carlson - Researcher/Writer
Hope Butner - Production Assistant
Levi Butner - Videographer
Lauren Ivy - Set Design
Vanessa Hill - Consulting Producer
Aleeza McCant - Illustrator
Rachel Allen - Illustrator
Consultant - Kyle Kitzmiller
Lucy Brock, Samantha Ward - Curriculum Consultants
Cathy Cowern - Transcription
Velodrome Photo: flic.kr/p/cSkSDQ
Fritz Zwicky Portrait: www.zwicky-stiftung.ch

Пікірлер: 526

@eccentricOrange 3 жыл бұрын

I literally (and I don't exaggerate) can't find a better teacher!! Many Edutubers are AMAZING teachers; you should collaborate and create material for school curriculum that's both educative and engaging

@astrophiledevansh898 3 жыл бұрын

Like Vsauce, veritausium, kurkegzat etc. Literally they teach me more than school. If I were to choose being thought in school vs taught by one of these people I would choose KZfaq.

@eccentricOrange 3 жыл бұрын

These are the ones I have in mind: 3Blue1Brown, Ben Eater, CGP Grey, SmarterEveryDay, Physics Girl, Steve Mould, VSauce, minutephysics, Tom Scott, Veritasium and Crash Course

@melontusk7358 3 жыл бұрын

@@eccentricOrange Also don't forget Professor Dave Explains, Patrick JMT, Fermilab, Dr Physics A, PBS Spacetime, Doc Schuster, Professor Leonard, and MIT OpenCourseWare.

@yasharthgautam2821 3 жыл бұрын

@@eccentricOrange also Arvin Ash

@nitinpandey5753 3 жыл бұрын

These are good cicerone , but you guys should try to think more by yourself (give more time to think) so that it makes you great 👍

@SoundFieldPBS 3 жыл бұрын

Dianna + Skateboarding = Peak KZfaq

@janardans3860 3 жыл бұрын

Diana Boarding

@Bassotronics 3 жыл бұрын

She looks like a skate border.

@apexscape 3 жыл бұрын

@@Bassotronics she surfs & snowboard

@Bassotronics 3 жыл бұрын

@ *D L* I knew it!

@alexisflory6496 3 жыл бұрын

@@apexscape so what you saying is she only needs the last one to complete the trifecta

@timeverse1545 3 жыл бұрын

Queen of physics - KZfaq’s physics girl

@seriousthree6071 3 жыл бұрын

Sabine Hossenfelder is Queen, physics girl is the princess. Argue the toss if you want but go watch her physics videos.

@grandunification6226 3 жыл бұрын

@@seriousthree6071 i've watched few videos of both, though rating a person or their knowledge or channel is wrong, i say that the ranking of a teacher(any one who makes other's learn) not only depends upon how much knowledge they have and how much they are conveying without wasting time but also on how effective their lectures are

@seriousthree6071 3 жыл бұрын

@@grandunification6226 there are many potential ways of comparing KZfaq channel presenters. Not everyone will use the same standards. Even if they are then they may be biased.

@grandunification6226 3 жыл бұрын

@@seriousthree6071 that's why no one should rate a person ☺😊😊😊

@ravinayadav8247 3 жыл бұрын

kzfaq.info/get/bejne/nNx3gaxml83Pcnk.html

@pekame 3 жыл бұрын

Now I want to learn general relativity so bad ... you're so good at this

@physicsgirl 3 жыл бұрын

YES! This is the comment of my dreams. Thank you, I can die now.

@abhilashasharmasuman6800 3 жыл бұрын

@@physicsgirl Please don't!!!

@akashpallepati61 3 жыл бұрын

What is the doubt?

@localtitans4166 3 жыл бұрын

@@physicsgirl if u die how will u make the video

@dankuchar6821 3 жыл бұрын

You were like many of my best students. They love the complicated hard stuff! Relativity and Quantum p Physics are always fun because they really require us to stretch our brains beyond our everyday experience. I also do sections on acoustics and light and colors, many of the Liberal Arts students really love these sections. Just know to you Diana. You do an excellent job! Physics Girl rocks!

@flyingark173 3 жыл бұрын

Fantastic video! I only wish I could understand it! You make physics simple, and yet at the same time you remind me why I dropped out of physics in high school. At 47 yrs old, I've missed my opportunity to be a scientist, but I feel, based on your videos, that if I had a tutor with your knowledge at the time, my education and subsequent career would have been vastly different from what it is today. Your videos are very inspiring and I hope that millions of young people are watching and using the knowledge that you impart to further enhance their lives. You are doing a great service to your fellow humans. Be proud of that and continue on inspiring young scientists. I know this probably flies in the face of everything you believe, but I thank God that you exist and you are helping to spread knowledge and understanding to a new generation. Sincerely.

@uchesamuel4061 3 жыл бұрын

I learn more physics here than my whole life in school...thank you Diana for doing this for us physics lovers❤️

@happyhome41 3 жыл бұрын

"Thank you physics" -- love it. Well done (information, well edited, well presented, easily digested).

@math_the_why_behind 3 жыл бұрын

Thanks for these videos! I'm currently taking Physics this year, and I love the math and sciences, so I really appreciate this series.

@JB0528 3 жыл бұрын

A whole lot of this goes over my head, but I really do enjoy these videos. Thanks for the education =]

@crazybrit-nasafan 3 жыл бұрын

The force IS strong in this one. Watch she does not join the dark (matter) side.

@astrophiledevansh898 3 жыл бұрын

But I would like if she did it.

@Valdagast 3 жыл бұрын

_For my ally is gravity, and a powerful ally it is. Planets creates it, makes them grow. Its energy surrounds us and binds us together. You must feel gravity around you; here, between you, me, the tree, the rock, everywhere, yes. Even between the land and the ship._

@jack0cat 3 жыл бұрын

It’s hip to be square. 🤣 My friends think that I am a genius when they come over and I’m watching your channel.

@buttersalsa4947 3 жыл бұрын

Love these vid! They are helping me with my senior ap physics c class so much! Especially with school being online this year I need all the help I can get, keep it up!

@BillBodrero 3 жыл бұрын

You, dear miss, are exquisitely, wonderfully, objectively awesome. Thank you for helping to create, and being the face of, such amazing content. You give me hope for future generations, and hope you continue to teach for many years to come. Thank you. Thank you. Thank you.

@mattwhiting2205 3 жыл бұрын

Great stuff. And THANK YOU SO MUCH for such an understanding and approachable presentation of what centrifugal force is in a physics classroom. (I am campaigning for physics teachers to stop saying, "There is no centrifugal force." You explained it exactly the right way.)

@Ed-quadF 3 жыл бұрын

Thanks Di and all the rest that made this video possible. Love it.

@Sohamsta 3 жыл бұрын

omggg i was literally learning this at school today, thank you so much

@BothHands1 3 жыл бұрын

love this vid sooo much. did calc 2 and dif-eq back many years ago, but since my masters is neuroscience, i've forgotten a lot of it by now. love the refresher course

@aveekdas4948 3 жыл бұрын

I really enjoy and learn much from your explanation Please never stop making such awesome videos. Physics is all so exciting when we have teachers like you.

@Troll-by6kz 3 жыл бұрын

I'm currently studying in High school and this is so helpful, I've been watching your videos for a very long time

@cccircuit8296 3 жыл бұрын

You've gotten really good at making these, thank you!

@Saraseeksthompson0211 2 жыл бұрын

You should post the skateboard trick as the thumbnail because so many ppl will be interested in this! so good

@javierramirez6467 3 жыл бұрын

Dianna you are the best, I love all of your videos they're very productive! Thank you for making this amazing work! I love it!!!💚 🌎🇲🇽

@samedwards6683 5 ай бұрын

Thanks so much for creating and sharing this educational and entertaining video. I hope that each day you are feeling better than the day before 🙏

@johnchessant3012 3 жыл бұрын

I'm glad you included the derivation of mv^2/r. I wonder if there's an intuitive way to explain it to those who don't know calculus.

@muhammadhussainsarhandi9928 3 жыл бұрын

Here you go, kzfaq.info/get/bejne/hK5hktaAnbe9Y6M.html This is Khan Academy video where Salman Khan explains and derives the formula for Centripetal Acceleration just by intuition, this is the excellent explaination, you will really learn a lot from this video,

@muhammadhussainsarhandi9928 3 жыл бұрын

@Master Mind what do you mean?

@hotflashfoto 9 ай бұрын

This is 2 years after you published this. I hope you are getting better. You have a spark for life and teaching and I really like your presentations.

@bhargaviprajapatii 3 жыл бұрын

I scrolled through Instagram while my teacher taught this, she's better than any physics teacher I've met

@papaowl13803 3 жыл бұрын

Dianna I just love going to school with you as teacher. You just explained the road ?. Some of the rest I know. But nobody ever has explained the force of the different road grades. Thanks Dianna

@storyspren 3 жыл бұрын

"Today in intro to physics, we're doing megastructures." Coolest physics teacher :D

@ravinayadav8247 3 жыл бұрын

kzfaq.info/get/bejne/nNx3gaxml83Pcnk.html

@silverstream3531 3 жыл бұрын

I just finished learning about the centripetal force, this really helped!

@frankgulla2335 3 жыл бұрын

Another great lesson. Thank you, Diana

@richardperritt 3 жыл бұрын

Nice shout out for Ringworld. 👍👍 Awesome series BTW. Your presentation is the style I wish everyone could experience in formal school. It's makes what could be a dry, boring subject interesting. I remember my first physics lessons. On TV (remember that archaic device?) with Prof. Julius Sumner Miller. To me, a geek, it was the most interesting part of a little Canadian TV show (now with a huge cult following) called The Hilarious House of Frightenstein (starring, among a couple of others, Billy Van and Vincent Price).

@KamalKishor-yo9ub 3 жыл бұрын

A great fan and your regular student from India 🌟👍.

@dr.x4698 3 жыл бұрын

YOU ARE GRADUALLY COVERING OUR NEET SYLLABUS!!

@soltcolt4506 3 жыл бұрын

These videos are very useful for everyone, please keep up the good work.

@obiesbenefactor5058 3 ай бұрын

We miss you making new videos. Thank you for all those that you have put together to keep us occupied while you get better.

@johnchessant3012 3 жыл бұрын

Nice message from Veritasium at the end!

@AhmedMAdly 3 жыл бұрын

i took centripetal forces last year and i just understood it now :"D please keep making these videos they help me a lot! ^_^

@johnarcayan8088 3 жыл бұрын

This channel is amazing!

@naveenraj2008eee 3 жыл бұрын

Another cool lesson learned.. Thanks Diana.. Awaiting for more..

@NelielSugiura 3 жыл бұрын

First thoughts about the motion of going in a circle and speeding up made me think of Furze's large donut where he rode around on the wall. Then you talk about bent space and I remembered that Veritasium did his video on that a few days ago. Great how all of KZfaq relates back to itself. :)

@bonchonjonjon 3 жыл бұрын

I appreciate you addressing the "oh so controversial" centrifugal force. Like many, it was taught to me as just fictitious but yes... things are not so straightforward.

@abrahamwondafrash7549 3 жыл бұрын

it is so nice to have you as a teacher Diana❤️❤️❤️

@mikeymadnez 3 жыл бұрын

I love the set!!! Well done!!

@anubhavrana621 3 жыл бұрын

Great explanation Dianna as usual. Best wishes, always.

@turpialito 3 жыл бұрын

Dianna and Jade from Up and Atom are among (if not) the most fun-to-watch, easy-to-understand physics videos on KZfaq. I commend these ladies.

@mjayaprakash2807 3 жыл бұрын

I love the way of teaching the science with practical way

@Omni0404 3 жыл бұрын

This is such a well made video!

@Self_Proppelled 10 ай бұрын

Dianna is the best. Hoping we see much more from her.

@dankennedy4364 3 жыл бұрын

Ms. Dianna makes these fun!

@nitinpandey5753 3 жыл бұрын

I didn't heard about Vera Rubin's conclusion before , wow new things I have learnt today ✌️ thankyou🤗

@iampuzzleman282 3 жыл бұрын

I get loopy trying to digest physic lessons. Dianna makes it easier and fun!

@ivandeleon8969 3 жыл бұрын

YOOOO IM A POI SPINNER AND IVE BEEN WAITING FOR THIS EPISODE!

@MattnTarryn1 3 жыл бұрын

Pls keep making these I love them I always wanted to be a good skater

@musicmanmatt87 3 жыл бұрын

These are so great!

@MakeBrooklyn 3 жыл бұрын

Well done hindmost! Love these videos.

@onehitpick9758 3 жыл бұрын

Keep in mind, we're just looking at galaxies and haven't seen them spin at all except for at the centers (such as Sag-A* time lapse and remote BH imaging effects). We've just seen some redshift/blueshift elsewhere on larger galactic scales -- nothing else. It's possible that galactic centers are actually hurling material waves outward like pinwheels, which generate periodic star bursts that tend to maintain their original velocity from ejection. They would also be slightly spun up by tidal interactions. Incidentally, the laser-measured tidal recession of our own moon closely matches the expansion of space time estimated on much larger scales (it's in the same ballpark, anyway). With the never-ending, massive failures of big bang, alternatives are in play.

@utkarshsrivastav6693 3 жыл бұрын

Always eagerly waiting for her remarkable shows, full of knowledge & curiosity... Please do one more thing- Do upload subtitles from your end for these presentations, bcz most of the young population (who need it most) of Non-western countries are unable to get this precious information bcz of fear of not understanding spoken English very well..

@amrhamed9553 3 жыл бұрын

AWESOMENESS IS THE WORD THAT IS INCREDIBLY SMALL FROM WHAT YOU REALLY DO, AND YOUR GENEROUS TEAM. THANKS FOR YOUR OUTSTANDING CONTENT, VIRTUAL HIGH 5 ✋✋👍👍

@mehulsahu6114 2 жыл бұрын

Thanks for such content and ending sir veritasium said awesome lovo from India

@cupid111aby 3 жыл бұрын

Dianna sissy, you the best. U had helped me in many situations. Thank you for this too. Love you dear sis, take care ❤️❤️❤️

@RobertSmith-pw9io 3 жыл бұрын

Professor you are amazing! And a little spooky, you always post a video on the exact issue I am struggling with. You do a terrific job at explaining it so I can understand it better, but I'll have to remember not to drink coffee before watching-because you inject enough energy into the experience that it takes hours for my brain to slow down. Thank you very much!!

@megamanx466 3 жыл бұрын

Caffeine has been shown to help with memory retention though. :P

@dannydanny9875 3 жыл бұрын

I love learning about circular motion with Diana :-D

@davidwilkie9551 3 жыл бұрын

Tried tested and true enough, good basic knowledge for practical Physics.

@temidayofalomo991 3 жыл бұрын

Literally, my crush 😻 Thanks to you and the team for this❤️❤️

@samukuttan 3 жыл бұрын

You are an amazing teacher. Lots of power to you, from India

@Fer-wr5xb 3 жыл бұрын

This has saved my physics grade singlehandedly.

@milansood8240 3 жыл бұрын

hi diana today my techer used your 4 year ago video to teach bernoulli principle i was very happy that i already know you

@alexaryan6362 3 жыл бұрын

You made physics easier a lot more fun and interesting keep it up and love you 😊

@antonettemarietomarong6921 3 жыл бұрын

Thank you for making Physics that easy

@lordmaximillius3431 2 жыл бұрын

I love Physics and Veritasium and now Physics girl

@abd1x7 3 жыл бұрын

Just learned these in school like these week I have a test on circular motion next week thanks for the explanation

@davee7669 Жыл бұрын

A Very educational physics speech, thanks 💯

@ragibishrak6705 3 жыл бұрын

Uhhh.It was damn good.Thank you for clearing my doubts.Honestly, speaking this is the way physics should be taught.Even your smiling face gives me more confident than my teachers lecture.☺

@loqkLoqkson 3 жыл бұрын

yay for unit analysis! (I use it all the time)

@hrithikgeorge4751 3 жыл бұрын

20:38 That was so satisfying!

@kampfkeks6619 3 жыл бұрын

Dianna you should really watch (or read) the expanse if you want to see what the future could look like! They have a spaceship that imitates 0.3 earths gravity by spinning a big drum in the middle and every spaceship does a "flip and burn" to get some resemblance of gravity! It's awesome

@megamanx466 3 жыл бұрын

Or also the 'Gundam' anime series has had those for around 40-50 years. The video game 'Halo' too uses a giant spinning ring with a habitat within. :)

@wedgie502 3 жыл бұрын

im 48 years old and just want to know how stuff works, lol. awesome new videos Dianna!! keep 'em coming!!

@beriukay 3 жыл бұрын

Gravitron was my favorite, hands down. And then lifted back up with great effort.

@DanielNaias 3 жыл бұрын

super like ., your work was very good. congratulations.

@desigeekchishi 3 жыл бұрын

that look at @1:40 ;) Amazing video n the application of circular motion :)

@Life_42 3 жыл бұрын

I love* your videos! I love your personality!

@CM-js5bh 3 жыл бұрын

Now I have a headache... but is good because I made my brain to comprehend it... more of these please!

@ThoseMadFoxes4330 3 жыл бұрын

Oh, and the Shaolin “Rope Dart” is based on the principle of establishing a velocity in a dagger on the end of a rope, then decreasing the radius the dagger is swinging on in order to give the dagger more force when it’s released from its circular path (on the tangent of course). I’ve always thought that decreasing the radius made the dagger move faster, but now I see the dagger actually moves slower along its smaller radius, not just as fast in a tighter circle; it just completes more rotations per minute than before. I’m now trying to figure out why that would give it a higher velocity upon release O_O! So damn cool!!!

@oofmantan 3 жыл бұрын

Your one of the coolest people I have ever watched

@oofmantan 3 жыл бұрын

Your Unique

@himanshuchauhan940 3 жыл бұрын

You are just awesome love to learn physics by you

@dennismcavoy860 3 жыл бұрын

Another great video thanks cool physics girl very helpful

@tubeyoukonto 3 жыл бұрын

Thank you for correctly calling the INWARD force centripetal. In the past few years this universally accepted mistake has popped up in the internet: People call the outside force centripetal force. I mean, the clue is in the name. Centri -> center ; fugere -> fleeing => Fleeing the middle.

@PrateekVarshney_PV 3 жыл бұрын

Diana's version of "you spin me round" 😛 and spinning 🐄 s

@harpstone 3 жыл бұрын

Indeed - may centripetal force always be with us.

@evilmeerkat29 3 жыл бұрын

Very good video!

@queencarter3048 3 жыл бұрын

I love your new background! Very prettyy! I usually watch you every week but i guess i havent been getting notified.. dang bell! Anyways, thank you for all you do i love your videos and knowledge. Keep doing you girl! Peace&Love&Light to you all! ☮☯️🕉

@harshbamane17 3 жыл бұрын

Even my native language is not english i got max. Of the teaching which i dont understand from my native teachers.Loved so much . Love from India❤️. Thx mam.

@allcolours3213 3 жыл бұрын

This video is Way more better than a class lecture

@chiranjibduwaria6967 3 жыл бұрын

You are awesome Diana

@lovehope5126 3 жыл бұрын

Wow wee 😀 this physics stuff really leaves me confused sometimes but I sure like the way she explained it . I think I might have gained a better understanding of it.

@Alan_Hans__ 3 жыл бұрын

The Larry Niven series of Ringworld books are amazing. He writes awesome scifi with real physics in them. Not only that but he was 1 of the consultants for Ronnie Rayguns SDI (Star Wars) program.

@donnysandley6977 3 жыл бұрын

I love you so much Diane 😍

@harshbandodkar5833 3 жыл бұрын

Mam please cover entire mechanics,thermodynamics,shm,waves, electricity and magnetism and modern physics. This is the syllabus for jee mains and only you can make it very easy 😊. Love from India 💙💙💙

@TheSdfswf 3 жыл бұрын

I do it the same way - the textbook way, but I enjoyed learning the 'new' way. Just depends on which force you choose to resolve.

@FroehligGirlz 3 жыл бұрын

".... boundary conditions. I'll call this the Extreme Behavior Method of Sanity Checks." I think I've always felt physics and psych have parallels. Centriptetal vs. Cetrifugal (aka objectivity), behavioral inertia, gravity, calculating forces... this one's a gold mine!