MIT 8.01 Classical Mechanics, Fall 2016 View the complete course: ocw.mit.edu/8-01F16 Instructor: Dr. Peter Dourmashkin License: Creative Commons BY-NC-SA More information at ocw.mit.edu/terms More courses at ocw.mit.edu
Пікірлер: 46
@hsm23103 жыл бұрын
I so loved graphs, using differentiation to plot maxima/minima points and so on. This video reminded me of that love thanks to a random video on unstable equilibrium.
@ahmeds45 жыл бұрын
This instructor is amazing! I wish my school does have someone like him
@user-ng4lm1ir2b3 ай бұрын
5:17 unstable equilibrium point 6:21 stable equilibrium point
@tamaghnachaudhuri96755 жыл бұрын
Rather than just giving differential inequalities it's teaches the intuitive way of understanding.... Nice and thank you!!
@1light4love3 жыл бұрын
YOU'RE AMAZING!!! Very insightful without becoming overwhelming! 🙏 Thank you so much (for this and the followup video 🤓) This is the last section before our exam in 2 days... and I feel solid on this stuff before even entering the eCovid Classroom today😅👍🙏 ✨Watcha me shine, ya'll☀️
@matthewa17296 жыл бұрын
How did you get so good at writing backwards?
@kloo_6 жыл бұрын
Most likely either the glass layer or the background is overlaid and flipped to get this effect. So not actually writing backwards
@matthewa17296 жыл бұрын
kliu lol I kno
@LetsbeHonest975 жыл бұрын
Check out their lightboard technology. Its awesome
@fernandoalvear37395 жыл бұрын
The effect is called "lightboard". Its pretty awesome: sites.google.com/site/northwesternlightboard/home
@ambroseezzat27035 жыл бұрын
Ever notice how all these content makers who use the transparent board write with their left-hands? Given the proportion of lefties, this is highly unlikely. They write normally, and then the footage is flipped. Either that, or suddenly everyone of them is ignoring the simple "flip solution" and opting to write with their left hands, backwards, and wearing their wedding rings on their right hand too. In that case, I'd like to joint hat club. Sounds like they're pretty fun people if that's the case.
@eshnaroy7794 жыл бұрын
This video is so awesome!!! Thank you!!
@VanJake-pu2us5 ай бұрын
Great 👌 your works are so accurate 🤩🤩 thanks so much for your helping
@alloranovak14762 жыл бұрын
Amazing explanation!! Thank you sir
@varunkharayat42515 жыл бұрын
Great explanation sir
@_tasneem73782 жыл бұрын
Wow, super clear!
@GabrielKelly984 жыл бұрын
Incredible!
@tougue4 жыл бұрын
It's just incredible how many of those clever people are left handed...
@the_sophile3 жыл бұрын
Are you joking? Because this is flipped and he is actually writing with his right hand
@tougue3 жыл бұрын
@@the_sophile yup, humour it was ;)
@user-mc1dp5oy8e6 ай бұрын
Thank you
@jonathansum90845 жыл бұрын
Why my professors did not say F =-slop, and she or he told me local max is slowing down? Because of my professors lazy?
@matthewheck49334 жыл бұрын
I know its filmed through a mirror, but watching him "write backwards" is very distracting
@brendawilliams80622 жыл бұрын
Thankyou
@vijaymahla27096 жыл бұрын
how you are writing backward please explain i think you have used software
@mitocw6 жыл бұрын
Yes, software was used. See lightboard.info/ to see how this was done.
@ashishkumar-qz1bb5 жыл бұрын
at x =4/3 potential should be zero??
@accumulator48255 жыл бұрын
Though so as well for a second, but that's where the force is equal to zero.
@sarthakchavhan4 жыл бұрын
No bro
@chaosend38154 жыл бұрын
At x=0 and at x=2 the potential is 0. At x=0 and at x=4/3 the derivative of the potential (the force) is 0. Those are called critical points, basically where the slope is 0. Note: The point x=0 is shared by both.
@ConquerTheCurve Жыл бұрын
I have more examples like this on my channel if anyone wants more practice!
@eduoliveiraAtUTube3 жыл бұрын
Are these values for a and b arbitrary? If not, how to calculate them? Thanks in advance.
@YourAashique Жыл бұрын
Subscribed on 6th Muharram 1445 Hijri, 24th July, 2023 at 8:08 pm (Indian Standard Time).
@LT-mf9uf2 жыл бұрын
why Fx = -du/dx ,why there is a mius sign?
@huzaifaabedeen71192 жыл бұрын
Chinese 🦠😷
@adityayadavx447 Жыл бұрын
Because force is the -ve of the slope or potential. F(x)= -du(x)/dx.
@andyroo47202 жыл бұрын
Peter makes a big mistake at 5:30-6:00. First of all, his description of stable and unstable equilibrium points is not rigorous, but moreso an intuitive explanation of some way of classifying equilibrium points, which is fine. But, the mistake he makes is when describing unstable (and stable) equilibrium points, he says, "And so if a particle is displaced a little bit from the 0 point, it moves off to the right, and it will continue to feel a force in this direction, and so it will move away from the 0 point of the force" (vice versa for the other side). Since there is no net force acting on the particle at the equilibrium point, he assumes that the particle starts off a bit past it (in the +x direction), but what he concludes is just false. Feeling a force in the positive x-direction does not mean that the object will actually move in that direction, it just means that there is an instantaneous acceleration in that direction, not necessarily motion in that actual direction. This is one of the most common misconceptions physics learners have when starting off, equating the direction of the force with the direction of the motion, and its a shame he mixes the two. While the overall quality of the course content is high, and I do ignore mistakes of Peter's here and there, like when he treats differentials like fractions or confusingly differentiates between coordinate systems and reference frames when they are the same thing, this is just egregious.
@jscexaminer40058 ай бұрын
"Since there is no net force acting on the particle at the equilibrium point, he assumes that the particle starts off a bit past it (in the +x direction), but what he concludes is just false. Feeling a force in the positive x-direction does not mean that the object will actually move in that direction, it just means that there is an instantaneous acceleration in that direction, not necessarily motion in that actual direction" If a net force is acting on something, could you please explain how there can be no motion?
@andyroo47208 ай бұрын
@@jscexaminer4005Yes, obviously a net force in the +x direction means a net acceleration in that direction by F=ma, but the object could already be moving in the -x direction in the first place with some initial velocity, and the acceleration may not be “large” enough to overcome this velocity and actually move the object in the +x direction. It may be a bit of a nitpick, but he mentions nothing about the kinetic energy of the particle or kinetic energy at all (just that Wnc=0 which is unrelated). Thus even if a particle is located in the +x direction from the second equilibrium point, its motion may not be as he described.
@itkeeks3 жыл бұрын
is this man writing backwardsssss
@huzaifaabedeen71192 жыл бұрын
yes dear
@daniellelafferty1422 жыл бұрын
Incredible!
@ConquerTheCurve Жыл бұрын
I have more examples like this on my channel if you want more practice!