Circular Motion - Physics 101 / AP Physics 1 Review with Dianna Cowern
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- เผยแพร่เมื่อ 14 ต.ค. 2020
- 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 - วิทยาศาสตร์และเทคโนโลยี
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
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 TH-cam.
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
@@eccentricOrange
Also don't forget Professor Dave Explains, Patrick JMT, Fermilab, Dr Physics A, PBS Spacetime, Doc Schuster, Professor Leonard, and MIT OpenCourseWare.
@@eccentricOrange also Arvin Ash
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 👍
Queen of physics - TH-cam’s physics girl
Sabine Hossenfelder is Queen, physics girl is the princess.
Argue the toss if you want but go watch her physics videos.
@@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
@@grandunification6226 there are many potential ways of comparing TH-cam channel presenters. Not everyone will use the same standards. Even if they are then they may be biased.
@@seriousthree6071 that's why no one should rate a person ☺😊😊😊
th-cam.com/video/fvGNI52gkBE/w-d-xo.html
Dianna + Skateboarding = Peak TH-cam
Diana Boarding
She looks like a skate border.
@@Bassotronics she surfs & snowboard
@ *D L*
I knew it!
@@apexscape so what you saying is she only needs the last one to complete the trifecta
Now I want to learn general relativity so bad ... you're so good at this
YES! This is the comment of my dreams. Thank you, I can die now.
@@physicsgirl Please don't!!!
What is the doubt?
@@physicsgirl if u die how will u make the video
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!
"Thank you physics" -- love it. Well done (information, well edited, well presented, easily digested).
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.
Thanks for these videos! I'm currently taking Physics this year, and I love the math and sciences, so I really appreciate this series.
I learn more physics here than my whole life in school...thank you Diana for doing this for us physics lovers❤️
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.
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.)
A whole lot of this goes over my head, but I really do enjoy these videos. Thanks for the education =]
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!
I'm currently studying in High school and this is so helpful, I've been watching your videos for a very long time
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.
Thanks Di and all the rest that made this video possible. Love it.
The force IS strong in this one. Watch she does not join the dark (matter) side.
But I would like if she did it.
_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._
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!!!💚 🌎🇲🇽
omggg i was literally learning this at school today, thank you so much
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 🙏
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
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
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.
Here you go,
th-cam.com/video/NH1_sO8QY3o/w-d-xo.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,
@Master Mind what do you mean?
i took centripetal forces last year and i just understood it now :"D
please keep making these videos they help me a lot! ^_^
Dianna and Jade from Up and Atom are among (if not) the most fun-to-watch, easy-to-understand physics videos on TH-cam. I commend these ladies.
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).
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..
Another cool lesson learned..
Thanks Diana..
Awaiting for more..
You've gotten really good at making these, thank you!
I just finished learning about the centripetal force, this really helped!
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.
Another great lesson. Thank you, Diana
These videos are very useful for everyone, please keep up the good work.
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!!
Caffeine has been shown to help with memory retention though. :P
I didn't heard about Vera Rubin's conclusion before , wow new things I have learnt today ✌️ thankyou🤗
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.
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 TH-cam relates back to itself. :)
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 ✋✋👍👍
I love the set!!! Well done!!
Dianna is the best. Hoping we see much more from her.
it is so nice to have you as a teacher Diana❤️❤️❤️
Dianna sissy, you the best. U had helped me in many situations. Thank you for this too. Love you dear sis, take care ❤️❤️❤️
im 48 years old and just want to know how stuff works, lol. awesome new videos Dianna!! keep 'em coming!!
Great explanation Dianna as usual. Best wishes, always.
This channel is amazing!
It’s hip to be square. 🤣
My friends think that I am a genius when they come over and I’m watching your channel.
I scrolled through Instagram while my teacher taught this, she's better than any physics teacher I've met
I love the way of teaching the science with practical way
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.
I get loopy trying to digest physic lessons. Dianna makes it easier and fun!
Nice message from Veritasium at the end!
hi diana
today my techer used your 4 year ago video to teach bernoulli principle
i was very happy that i already know you
This is such a well made video!
These are so great!
Literally, my crush 😻
Thanks to you and the team for this❤️❤️
Pls keep making these I love them I always wanted to be a good skater
Tried tested and true enough, good basic knowledge for practical Physics.
You made physics easier a lot more fun and interesting keep it up and love you 😊
Thanks for such content and ending sir veritasium said awesome lovo from India
YOU ARE GRADUALLY COVERING OUR NEET SYLLABUS!!
You are an amazing teacher. Lots of power to you, from India
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.☺
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.
A great fan and your regular student from India 🌟👍.
Just learned these in school like these week I have a test on circular motion next week thanks for the explanation
Ms. Dianna makes these fun!
Great video!
May I ask. Why does your free body diagram only have forcing pointing to the left?
For me that means the car want to go down the slope even more.
You do state that you want the 2 forces to be equal to balance the car. Again it feels like the one force should be going outwards.
Kind regards
Now I have a headache... but is good because I made my brain to comprehend it... more of these please!
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! ☮☯️🕉
You should post the skateboard trick as the thumbnail because so many ppl will be interested in this! so good
YOOOO IM A POI SPINNER AND IVE BEEN WAITING FOR THIS EPISODE!
We miss you making new videos. Thank you for all those that you have put together to keep us occupied while you get better.
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.
This has saved my physics grade singlehandedly.
Well done hindmost! Love these videos.
Hey Dianna, I feel like there should be given a radius of curvature of the banked road in Problem 3
or can we solve it without the radius? If that's the case please share the solution.
I tried solving and got a trigonometric eqn which is
cos x(cos x - sin x) = 1.
I could have done something wrong, please help me.
Thank you for making Physics that easy
Thank you for this..My husband is one of these guys...I remember when this was a new trick ..and now I can share your video with our 13 year old youngest daughter for homeschool! So fun to find this!
In case you wanted to know his name is Bucky Lasek
@expired tofu that’s silly ...
@expired tofu yes for years
@expired tofu ahh thank you.. enjoy your day🌸
super like ., your work was very good. congratulations.
@Physics girl will you make videos on Electro magnetism and induction .
Gravitron was my favorite, hands down. And then lifted back up with great effort.
I love learning about circular motion with Diana :-D
A Very educational physics speech, thanks 💯
Your one of the coolest people I have ever watched
Your Unique
Please also make a video on inertial frame. Your videos clears my concepts and so I also want to learn about centrifugal force
Does this also apply with a human standing still at the equator, with the earth moving at over 1,000 mph??? Thanks Dianna 😊
Do you remember the rotating space station in Kubrick's 2001? It seems to to rotate once per minute. How large is it's diameter, assuming the rotation is establishing 1g?
"Today in intro to physics, we're doing megastructures."
Coolest physics teacher :D
th-cam.com/video/fvGNI52gkBE/w-d-xo.html
Does any of this relate to blending a cake mix?
Another great video thanks cool physics girl very helpful
is there anyway you could make these faster lol theyre so helpful! im a freshman in college right now and these are saving my physics grade so much... but were a little bit ahead of where your last video is!! i swear i would pay to have access to your future videos earlier to help me in this class!!
yay for unit analysis! (I use it all the time)
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 💙💙💙
This video is Way more better than a class lecture
Diana can you share a link of where to buy that amazing Jupiter ornament?
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.
You are just awesome love to learn physics by you
i love all your videos. Great teacher you are.is it correct In space, 0 Gravity?
I love* your videos! I love your personality!
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.
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.