2 жыл бұрын
2 жыл бұрын
Пікірлер
@user-og5rf1js7x Ай бұрын
Very helpful sir ,thank you
@mohsenjavaher7782 2 ай бұрын
Thank you so much i just couldn't imagine how it "change phases"... And i needed something just like this! Thank you ❤
@Oki_wfsth 2 ай бұрын
Thank you so much, I have a test and assignment due tomorrow and didn’t have a clue how to do this, and physics teacher didn’t explain it. You are a lifesaver good sir 🙏🙏🙏
@sachinrath219 4 ай бұрын
why the work done by torque not considered potential energy mgh is not a part of rotational dynamics, thanks
@stevenhiggins2544 9 ай бұрын
I believe there should also be a two in the bottom of of the equation when solving for B at the end.
@Bilbo12 9 ай бұрын
flat earthers going crazy with this one
@user-tt8gk8re1w Жыл бұрын
Great explanation thanks for the help!
@anandpatel5240 Жыл бұрын
I found your method very easy to understand, Thank you for your efforts
@anandp7999 Жыл бұрын
Exactly what I was looking for , thank you for posting it.
@valeriereid2337 Жыл бұрын
Thanks for this video. Am I correct to assume that when calculating angular moment for a particle or system of particles I would use L=r X p, but when calculating angular momentum of a rigid body, say a disk, I would use L = (I)(Omega). Oh, by the way L used because all the other letters were taken, or so I think.
@TadThurston Жыл бұрын
That sounds about right -- I usually think of (r x p) as representing L *about* some distant point, and (I*Omega) as representing L about an object's *own* center-of-mass. Thanks!
@valeriereid2337 Жыл бұрын
@@TadThurston Thanks so much for taking the time to reply. Appreciate it.
@gab.o_ Жыл бұрын
Bruh
@neoknight9180 Жыл бұрын
Lifesaver thank you
@TadThurston Жыл бұрын
Glad it was useful!
@stevenhiggins2544 Жыл бұрын
I sell solar panels and am super familiar with kWh costs. Our energy has gone from $.10 to over $.17. Really crazy stuff. But definitely very helpful to know a bit about kWh coming into this unit. Energy is so ridiculous right now, we can usually cut people's electric bills in half just from offering a cheaper price per kWh.
@stevenhiggins2544 Жыл бұрын
To add to this, you can add extra solar panels and then just own your own fuel costs for your EV instead of charging up anywhere else.
@TadThurston Жыл бұрын
@@stevenhiggins2544 That would be such a cool feeling -- having a car that runs for "free". :)
@yvonbourlesleyoutubeurresa2183 Жыл бұрын
Thank you for this video. I used in in one of mine (with your name and a link in the credits of course !). kzbin.info/www/bejne/enzMq2SErLqHibs
@SonyThakur-jl3ir 2 жыл бұрын
keep going on dude you"re a good teacher you will reach 1million soon if u keep on posting quality content.love from nepal
@TadThurston 2 жыл бұрын
Ha! Let's see if it ever gets to 1000 first! Thanks for your kindness. If these are helpful to people, that's the most important thing.
@lesmalan 2 жыл бұрын
My ebike has a 720Wh battery, and my last bill charged me $0.155 per kWh for home electric service. So, my ebike costs like $0.11 to "fill up". Compared to my car, which costs around $50 to fill up, it's somewhere in the region of 60x more expensive per mile to fuel my car than my ebike, assuming a 300 mile range for the car, and a 40 mile range for the ebike. That doesn't take into account cost of maintenance, cost of insurance, cost of infrastructure, or cost of pollution.
@TadThurston 2 жыл бұрын
I think batteries have reached the point where electric vehicles of all types will now start taking over *fast*. And it's such genius to use the same energy source as most houses use -- I've heard the point made that sure, right now the source of electricity is overwhelmingly fossil fuels, but in the future, if that changes more to nuclear/solar/wind/geothermal, they'll all produce electricity anyway, so electric vehicles are inherently future-proofed.
@edgerj5186 2 жыл бұрын
V= “sq root” (3gL)
@TadThurston 2 жыл бұрын
Yes! Thanks for catching it.
@lesmalan 2 жыл бұрын
I noticed that your values for T1 and T2 flip-flopped from positive/negative when you were calculating the force on the pulley, compared to when calculating the acceleration of the masses. Is that because the pulley would be spinning clockwise, which is "negative"?
@TadThurston 2 жыл бұрын
I think that’s right - it’s a tricky business. I’ve already assumed the acceleration will be to the right/down the plane for the masses, so then I think, “what will be the rotation of the pulley consistent with that?”, and those would be the T values *as felt by the pulley* in order for that to happen. It’s always tricky that tensions point different directions depending on which object they’re acting on.
@christopherreed2694 2 жыл бұрын
What about its punk phase 🤪 you never hear bout that one 🤔
@edgerj5186 2 жыл бұрын
No h given?
@TadThurston 2 жыл бұрын
Ah, right, I didn't write that down -- I must have used h=2 m :) thanks!
@birdlandbill7867 2 жыл бұрын
How does this derivation account for the rotating reference frame?
@TadThurston 2 жыл бұрын
Since the calculation is carried out in the non-accelerating (Sun-centered) frame, Newton's Laws work all right.
@shivamhanda1748 2 жыл бұрын
Great video! Thanks for your calculations of the Lagrange points, really helps me out for my physics assignment.
@TadThurston 2 жыл бұрын
Very kind, thanks!
@JayDeitch 2 жыл бұрын
But at L2 the earth and sun are both pulling in the same direction (toward the earth and sun) . So what keeps m in the same place?
@TadThurston 2 жыл бұрын
That's a good question -- it's a subtle idea. You're right that L2 wouldn't be a point of equilibrium if everything were static, but it's a point of dynamic equilibrium. It's not that things at L2 would stay in the same place, but forces are such that it stays in the same place relative to the Earth, or in other words it has the same orbital period going around the Sun. Then it makes sense, since it's a little bit farther out, so you'd think the period would be longer, but the increased gravitational force of both bodies compensates and speeds it up a bit.
@martinchua256 2 жыл бұрын
centrifugal
@bowtangey6830 2 жыл бұрын
My understanding is that we are balancing the inward tug of gravity with the centrifugal for, which wants to fling us outward. The equation with the resultant gravitational force set equal to mv^2/r shows that the circular motion of point about the sun is relevant. Since the centrifugal force is a "fictitious force," this seems to imply that our frame of reference (with the sun motionless at the origin, and earth motionless on the x-axis, cannot be an inertial frame. It all ties together! 😄
@franciscoperez6132 2 жыл бұрын
SOMETHING IS MISSSING, MAYBE, NEED TO SHOW A THIRD ONE SIMULATION SHOWING ALL MOVEMENTS TOGETHER, 🤔🤔🤔
@LufthansaDAIGO 2 жыл бұрын
Rumors say that they are testing nuclear weapons on the backside of the moon.
@Zeldafan1009 2 жыл бұрын
Don’t forget- the moon isn’t in an equatorial orbit. It’s roughly 10° “above” the equator on one side and 10° “lower” on the other.
@Md-sd2go 2 жыл бұрын
So whenever there is a new moon there is a solar eclipse??
@TadThurston 2 жыл бұрын
That's the right idea -- the more precise way to say it is that solar eclipses *can only happen* during a new moon. What's really going on is a bit more complicated. If the Moon's orbit around the Earth was really in the same plane as the Earth's orbit around the Sun (like it's shown in most diagrams) then you'd be totally right. But the Moon's orbit is actually 5 degrees tilted, so most of the time the Moon is a bit above or below the position of the Sun and there's no eclipse. Only when they line up just right would you see it. I'm working on a new little movie that shows that very thing.
@Md-sd2go 2 жыл бұрын
@@TadThurston makes sense. Thanks for taking the time to explain it👍
@TadThurston 2 жыл бұрын
Any time!
@SpaceflightSimulator 2 жыл бұрын
@@TadThurston Good explained
@user-mi1xi2jt6v 2 жыл бұрын
바보들아냐? 회전방향도 모르나? 만들려면 제대로 만들어야지. ㅉㅉㅉ
@TadThurston 2 жыл бұрын
The Moon orbits the Earth counterclockwise as seen from above the N. Pole -- you can verify this yourself next time the Moon is waxing crescent or first quarter by watching it move eastward each night.
@kopk6781 2 жыл бұрын
와 놀랍다
@Kingdennissinned 2 жыл бұрын
Flat earth makes more sense.
@TadThurston 2 жыл бұрын
It's odd -- before a few years ago, I was pretty certain that there were no actual flat-earthers except for kids under 5 or internet trolls... but now I think they actually exist!
@zakwanberlin 2 жыл бұрын
How? The widely agreed upon flat earth model shows the moon and sun as 2D disks that act almost as spotlights, circling over the plane of the Earth. How would something circling above head ever appear to set BELOW the horizon and your head. Another thing is the moon is clearly a 3D object with shadows.
@eliaspeter217 2 жыл бұрын
And then you realize that it’s flat after all
@TadThurston 2 жыл бұрын
Sheesh, I hope not, because then it's 35 years of astrophysics (for me) and 2200 years of science down the drain...
@eliaspeter217 2 жыл бұрын
@@TadThurston sorry brother, but better you figure it out now than later
@ChadwickTheChad 2 жыл бұрын
@@eliaspeter217 There's absolutely no reason for anyone to believe the earth is flat. If you do, you need to be in prison.
@neoknight9180 Жыл бұрын
@@eliaspeter217 We seriously need to revamp the education system if there's still people like you spouting the most easily disprovable lies
@eliaspeter217 Жыл бұрын
@@neoknight9180 you’re an idiot who can’t prove anything. And you education is nonsense, you vaccinated, tv watching, processed food eating tax payer
@spacebar9733 2 жыл бұрын
im so lost 😥😓
@TadThurston 2 жыл бұрын
Can I help?
@djoleat 2 жыл бұрын
but just 6 circle for 365 sun days
@TadThurston 2 жыл бұрын
Well, the "Sun's orbit" isn't shown here, so you can imagine some orbital period for the Sun around the Earth to synchronize in the right way with Mars. But the main point of the animation is just to show how the apparent backwards motion is accounted for.
@djoleat 2 жыл бұрын
@@TadThurston i mean plan need merkur 88days, venera about 250, mars 500 days, to make one retrograde cilus
@martinchua256 2 жыл бұрын
great explanations. easy to understand L1 and L2 Lagrange points.
@TadThurston 2 жыл бұрын
Thanks -- very kind of you!
@vishnuhi1464 2 жыл бұрын
1/0
@qimaior3443 2 жыл бұрын
Esse vídeo só será valioso depois de legendado ...Brasil.
@attiliobastosguarnieri5416 2 жыл бұрын
O movimento da Lua se dá suavemente junto com o movimento da Terra girando sob si mesma. Como não foi mostrada a rotação da Terra vc se atém mais ao movimento da Lua ao redor sofrendo a ação da luz solar. Temos então a sequência Lua nova - quarto crescente - meia Lua - Lua cheia - quarto minguante e assim segue o ciclo.
@qimaior3443 2 жыл бұрын
@@attiliobastosguarnieri5416 gostei. Mandou bem. Gosto desses vídeos, só que tinha que ser legendado.
@jamesmmachell9162 2 жыл бұрын
I couldn't find why L is used for angular momentum but I can guess - is it because it looks like vector components at a right angle?
@TadThurston 2 жыл бұрын
I hadn't thought of that, good guess! I always assume it's from a language I don't know, like French. :D
@EngineeringPepper 2 жыл бұрын
OMGoodness thank you! I was so confused.
@TadThurston 2 жыл бұрын
Glad it turned out to be helpful! Thanks!
@TadThurston 2 жыл бұрын
That expression for the speed v should be v^2 (or take the square root of the right-hand side) at 10:00
@TadThurston 2 жыл бұрын
Dang, our distance from the Sun at 11:50 is of course 1.5e11 meters, not 1.5e-11 (result of calculation is all right)
@TadThurston 2 жыл бұрын
Oops, at 8:45 the "g" for a white dwarf is about 166,000 times g on the Earth's surface, not 6 million (formula is right, I just screwed up the calculation)
@DeeptanshuPrattya 2 жыл бұрын
Thanks for this👍🏻
@TadThurston 2 жыл бұрын
My pleasure - hope it’s helpful!
@EugeneGaufman 3 жыл бұрын
Вглядитесь в это завораживающее движение эпицикла, ритмом возобновляющегося дискретного ретроградного движения материнского радиуса! Но, если, следуя логике Ричарда Фейнмана о физической природе кванта, в сумме трасс энергии, границах предельных тенденций от начала к концу радианта структуры элемента (корпускулы, кванта) информации, то баланс анаболизма/катаболизма открытой термодинамической системы (динамической системы самоорганизующейся критичности), в форме определяемой эллиптической орбиты возможно составляет математическую, геометрическую модель феномена здравого человеческого смысла подчиненную принципу иерархического редукционизма, реализуемой в информационных технологиях социальной коммуникации обменом конвенционального смысла эмоциональных образов поведения, фиксированных на физических и биологических носителях памяти, на основе генетической памяти биологического вида Homo sapiens. Коллективное знание человека, накапливающееся в виде материальных символах смыслов эмоциональных образов поведения- Мемах и Артефактов составляет геологическую формацию ноосферы планеты Земля на границе определяемых человеком сред. Структура эмоционального реагирования индивидуального поведения в среде этических принципов общественной приемлемости, вероятно может буть описана абстракцией геоцентрической системой Клаудиуса Птолемея (1-2 век нашей эры), в которой биологическая природа репродукции человеческого генома может быть формализована «неподвижной и неизменяемой сущностью эпицентра мироздания», породившей, в познании (реализации когнитивной функции сознания) все многообразие антропрцентрического мироздания- материальной сущности бытия, как такового.
@cemozyalcn1256 3 жыл бұрын
The best one I've seen so far. Great animation👍.
@TadThurston 3 жыл бұрын
Very kind -- thanks!
@profeluisegarcia 3 жыл бұрын
Thanks¡¡ The best explanation in the entire web¡
@TadThurston 3 жыл бұрын
Ha! Very kind, thanks. Hopefully now I’ll have time to upload more Astro simulations
@antoniomantovani3147 3 жыл бұрын
A very classical American problem
@antoniomantovani3147 3 жыл бұрын
welcomed, and well done
@TadThurston 3 жыл бұрын
Very kind, thanks!
@maxman7401 3 жыл бұрын
Hey can you please help me I have a question
@Pureenergyrift 3 жыл бұрын
Considering your listed equipment and software for putting these videos together, you could stream some video games as well! :P
@TadThurston 3 жыл бұрын
Yeah, what the public needs is lots more of me working my way through Mario/Zelda games... :D
@Pureenergyrift 3 жыл бұрын
@@TadThurston "And as you can see here, Mario falls to his death with an acceleration of 9.8 m/s^2..."
@Pureenergyrift 3 жыл бұрын
another fun thing to do is calculate how much coal must be burned to keep this bulb running all year. Usually an astonishing number
@TadThurston 3 жыл бұрын
Heh, at 24 MJ/kg, it looks like about 15 pounds of coal :)
@Pureenergyrift 3 жыл бұрын
@@TadThurston did you consider the (only) 33% effectiveness of coal power plants? If not, its really 45 lbs. ~ A half cubic foot of coal, for a single, small light for a year. Ouch, pollution.
@TadThurston 3 жыл бұрын
Right, that was for 100% efficient energy transfer.