I've spent hours trying to figure out the curl of the velocity vector in cylindrical coordinates, and this derivation showed that I had the velocity vector wrong the whole time! Not only did it make me realize it was wrong, but WHY it was wrong. Thanks so much!
you all probably dont care at all but does anybody know a way to get back into an instagram account..? I was stupid forgot my login password. I would love any tips you can offer me
@Alexis Ernesto i really appreciate your reply. I got to the site on google and im in the hacking process now. Looks like it's gonna take quite some time so I will reply here later when my account password hopefully is recovered.
This is a really helpful video! I had troubles finding a good proof for this anywhere else. What would you say a formal name for this math is? Vector derivatives? I am having troubles finding it in my textbook.
shouldn't the directions of theta and theta dot be perpendicular to plane of rotation given by right hand rule?????? therefore shouldn't the direction of theta hat be perpendicular to given plane ???
If we use a polar coordinate system whose origin is either 1) moving with uniform velocity or 2) accelerating or 3) itself moving around another fixed point, can we use Newton's second law in the r hat and theta hat directions. I suspect we can still do so in case 1) but not if it's accelerating in 2) and 3). If not, how would we deal with such a system with an accelerating origin: I'm thinking something like a spinning ride which is itself on a spinning carousel. Hopefully you can comment on this. Thanks.
excellent explanation!, but why we just derivative r = rer why we don't derivative the second component which is θeθ. because we have two component rer + θeθ , Thanks
Apparently my professor thought this is so trivial that we would all know this already, yet I had to spend hours looking for a good explanation of what is happening here...
You wrote dy/dy on line one by accident. You meant to write dy/dt. It's a nit-pick but if someone is following letter by letter it might confuse them. Good vid
@@rhettallain yes but i questioned the unit vector of theta in Cartesian co-ordinate. Don't you think it should be perpendicular to the plane of motion? On the same line as for angular velocity.
Anurodh Kumar The direction of theta- hat depends on the position of the particle. Think of the position of a particle on the x-y plane. Now increase theta but the tiniest amount possible. Theta hat is the direction in which our particle moved by changing theta. Just like in Cartesian coordinates, î is the direction in which our particle would move if we changed i.
I've spent hours trying to figure out the curl of the velocity vector in cylindrical coordinates, and this derivation showed that I had the velocity vector wrong the whole time! Not only did it make me realize it was wrong, but WHY it was wrong. Thanks so much!
you all probably dont care at all but does anybody know a way to get back into an instagram account..?
I was stupid forgot my login password. I would love any tips you can offer me
@Edwin Robert instablaster ;)
@Alexis Ernesto i really appreciate your reply. I got to the site on google and im in the hacking process now.
Looks like it's gonna take quite some time so I will reply here later when my account password hopefully is recovered.
@Alexis Ernesto it did the trick and I finally got access to my account again. I'm so happy:D
Thank you so much you saved my account :D
@Edwin Robert no problem :D
Damn, this was super helpful and saved me hours of browsing through internet.
Thank you so much, Finally found the answer of my question after a month desperately trying.
Thank you so much, you explain so much better than my professor
hey!!
u explained it really nice. u could clearly deliver what my lecturer could not do in 1 hour!!!!
This is a really helpful video! I had troubles finding a good proof for this anywhere else. What would you say a formal name for this math is? Vector derivatives? I am having troubles finding it in my textbook.
The proof my professor used was complete crap. I loved this! thank u!
Nice video, finally I know the reasoning behind the time derivative of radius unit vector, thanks :)
Great video, I found it very helpful, thank you very much!!
Very well structured explanation !
Thank so much for this - a really clear explanation
thank u so much i could finally understand it properly 💗 you're cool
Thank God I got it Sir please make a video on acceleration in polar coordinates please please please
good explanation. It helps a lot. thank you
What a great explanation !
so much better than my lecturer thank you sir
I am from india and I find this question. Finally the question is meet to our channel.
So thank you so much sir 🙏🏻🙏🏻🙏🏻
Thank you, this is a much better explanation than my crap textbook
greatly explained !
FINALLY, THANK YOU PROFESSOR
Thank you so much!
How can I find the distance between line and point in polar coordinate
shouldn't the directions of theta and theta dot be perpendicular to plane of rotation given by right hand rule??????
therefore shouldn't the direction of theta hat be perpendicular to given plane ???
If we use a polar coordinate system whose origin is either 1) moving with uniform velocity or 2) accelerating or 3) itself moving around another fixed point, can we use Newton's second law in the r hat and theta hat directions.
I suspect we can still do so in case 1) but not if it's accelerating in 2) and 3).
If not, how would we deal with such a system with an accelerating origin: I'm thinking something like a spinning ride which is itself on a spinning carousel.
Hopefully you can comment on this.
Thanks.
awsm explaination sir
thanx for that
how u got negative in tangential component
excellent explanation!, but why we just derivative r = rer why we don't derivative the second component which is θeθ.
because we have two component rer + θeθ , Thanks
Thanks, it was very helpful ❤❤
very nice video and well explained.
Why is this not *only* the velocity in the r direction.
THANK YOU SO MUCH
why is 𝗿 not taken as ?
That was brilliant☺
Apparently my professor thought this is so trivial that we would all know this already, yet I had to spend hours looking for a good explanation of what is happening here...
thank u so much sir for this leacture love from Pakistan🥰
THANKS SO MUCH
You are a god. Thank you!!
Well done sir
Can someone explain where
r hat = x hat costheta + y hat sintheta comes from
super helpful!!!
Thank you!!!
Wonderful
Thank you
THANK YOU
Sir why didn't you take theta angle towards z direction? And why we are taking theta in z direction in circular motion??
Tnx alot sir. Form srilanka
Beauty
genius thank you
thnx from india
Holy shit!! This was such a mindfuck ..... Thank you!
Thanks a lot
thank you
thank u sir....
Nyc
Thanks
You wrote dy/dy on line one by accident. You meant to write dy/dt. It's a nit-pick but if someone is following letter by letter it might confuse them. Good vid
What is y cap here
Wow, amazing!
is theta dot equals do dr/dtheta?
theta dot is equal to the d(theta)/dt - it's the time rate of change of the angle (the angular velocity).
Rhett Allain thank you so much!
Rhett Allain thank you so much!
How do we know direction of theta hat??
theta-hat is in the direction of increasing theta
@@rhettallain yes but i questioned the unit vector of theta in Cartesian co-ordinate. Don't you think it should be perpendicular to the plane of motion? On the same line as for angular velocity.
Anurodh Kumar The direction of theta- hat depends on the position of the particle. Think of the position of a particle on the x-y plane. Now increase theta but the tiniest amount possible. Theta hat is the direction in which our particle moved by changing theta. Just like in Cartesian coordinates, î is the direction in which our particle would move if we changed i.
i think you need to refresh your basic physics
Anurodh Kumar Watch this, I hope it helps you. ua-cam.com/video/itidKSUXCMo/v-deo.html
do you give tutor service online
i wanna go fast....... there's no reason LMAO btw Love from INDIA
Derivative of r hat 2:52
what the fuck is a theta dot
This is so confusing ,i dont get you
Lekker gewerkt pik
Translated that is: " Good job, 'Dick' "
😂😂😂
Skip the first 10 seconds. Full of stupidness.