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It's my first year in engineering, I'm starting to doubt myself 'cause I really can't follow whatever my professors are teaching. Now I'm on break and I've decided to relearn everything... from the basics. This is a good way to start. I sincerely thank you.
I'm going through the same thing, 1st year Mechanical Engineering here, can you tell me about what you did to improve the basics, and how it affected your Engineering studies,Thanks.
If it helps anyone for physics 1, Always think of things in terms of direction - think of all 4 directions for every problem -choose what direction you want as positive -Keep basic ideas committed to memory like Momentum conservation, kinetic energy, potential energy etc, simply conservation formulas is more than enough dont overthink it -learn what a derivative and integral really is, this will help you understand whats really happening and youll tie things together more deeply. -remember that trigonometry can be used too, its a tool not baggage and definitely learn to derive the 4 basic kinematic equations that is the quickest way to learning linear motion.
I think that you describe the things in a simple way so that easy to understand , which I think is better understanding than any of professors’ theories and books
Bro i just got in grade 8 and my modules have all of the information it just gives what is the meaning of the laws of motions but not how to sovle the question or answer it you are a life saver and you explain it properly it is easy to undertand thank you bro❤
How come I can’t understand this from my professor? And even when I read the book but totally makes sense with you??! You’re awesome thank you so much!!!
I think you made a mistake there, in circular motion we talk about moment of inertia, which is different than just inertia Because if you compare the inertia of the disc and the ring it'll be same for both of them since they have the same mass, but the moment of inertia will be different for both of them
So my question is why is rotational inertia's coefficients 1/2,1, and 2/5. Are they just established coefficients? Will any rotating object without mass on the axis of rotation be 1 or MR^2, and will every object with mass on the axis of rotation be 1/2mr^2??
It comes from Calculus, and accounting for the distribution of mass. You can look up the derivations for common shapes of moment of inertia, like a solid uniform cylinder with a coefficient of 1/2, a solid uniform sphere with a coefficient of 2/5, and a thin uniform hoop with a coefficient of unity. The thin uniform hoop is a special case with the coefficient equal to unity, because all of the mass is concentrated at one radius from the axis of rotation.
Which of the two will accelerate faster? T = I x alpha For solid disk I is smaller than hoop Means lower resistance to motion than hoop So Solid disk will roll down faster
I'm wondering, where does this constant come from when calculating inertia (e.g.: I=1Mr² for the hoop and I=1/2Mr² for the solid? is it something that's defined for certain shapes, if so what about custom shapes?
nvm, quick google search: basically for complex shapes you'd have to divide your shape into the available ones and then calculate them seperately to get the total inertia.
Why doesn't the thickness of the thin hoop change the inertia? If you think about it, if the thickness of the hoop was .99999R compared to the solid disk, the formulas will state that the inertia of the hoop is twice that of the disk, which doesn't really make sense since they're very similar to each other. The only difference is that the hoop has a very small hole at the center.
It comes from Calculus. You determine an infinitesimal mass element dm, and its corresponding radius. Then you determine what dm is, relative to the definition of the original shape. Integrate radius^2 with dm as a differential, and you calculate the total moment of inertia of the shape.
The reason lb-in-sec^2 has seconds in its units, has to do with correcting the pound unit to stop being a force unit, and be a mass unit instead. It is to get rid of the seconds that are in the denominator of the pound unit.
The ultimate unification and understanding of physics/physical experience combines, BALANCES, AND INCLUDES opposites, AS E=MC2 is CLEARLY manifest as F=ma ON BALANCE; AS ELECTROMAGNETISM/energy is gravity. Here's the proof. This also explains why objects (including WHAT IS THE FALLING MAN) fall at the SAME RATE (neglecting air resistance, of course), AS E=MC2 IS CLEARLY F=MA ON BALANCE; AS ELECTROMAGNETISM/energy is gravity. TIME dilation ULTIMATELY proves (ON BALANCE) that E=MC2 IS clearly and necessarily F=ma ON BALANCE, AS ELECTROMAGNETISM/energy is gravity. Gravity is ELECTROMAGNETISM/energy ON BALANCE. ON THE CLEAR, EXTENSIVE, SENSIBLE, BALANCED, THEORETICAL, AND UNIVERSAL PROOF THAT ELECTROMAGNETISM/energy is gravity, AS E=MC2 IS clearly PROVEN TO BE F=MA ON BALANCE: Balanced inertia/INERTIAL RESISTANCE is fundamental, as ELECTROMAGNETISM/energy is gravity. The stars AND PLANETS are POINTS in the night sky. Energy has/involves GRAVITY, AND ENERGY has/involves inertia/INERTIAL RESISTANCE; AS gravity AND ELECTROMAGNETISM/energy are linked AND BALANCED opposites; AS ELECTROMAGNETISM/energy is gravity; AS E=MC2 is CLEARLY proven to be F=ma ON BALANCE. This NECESSARILY represents, INVOLVES, AND DESCRIBES what is possible/potential AND actual IN BALANCE. Indeed, A PHOTON may be placed at the center of what is THE SUN (as A POINT, of course); AS the reduction of SPACE is offset by (or BALANCED with) the speed of light (c); AS ELECTROMAGNETISM/energy is gravity ON BALANCE; AS E=MC2 is CLEARLY F=ma IN BALANCE !!! Gravity is ELECTROMAGNETISM/energy ON BALANCE, AS E=MC2 is CLEARLY proven to be F=ma IN BALANCE. TIME dilation ULTIMATELY proves (ON BALANCE) that ELECTROMAGNETISM/energy is gravity, AS E=MC2 is CLEARLY F=ma ON BALANCE. Gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE, AS ELECTROMAGNETISM/energy is gravity; AS E=MC2 is CLEARLY F=ma ON BALANCE; AS the stars AND PLANETS are POINTS in the night sky. Accordingly, ON BALANCE, the rotation of WHAT IS THE MOON matches it's revolution. TIME is NECESSARILY possible/potential AND actual IN BALANCE, AS ELECTROMAGNETISM/energy is gravity; AS E=MC2 is CLEARLY F=ma ON BALANCE. The stars AND PLANETS are POINTS in the night sky. Accordingly, ON BALANCE, it makes perfect sense that THE PLANETS (including WHAT IS THE EARTH) will move away very, very, very slightly in relation to what is THE SUN !!! ELECTROMAGNETISM/energy is gravity, AS E=MC2 is CLEARLY F=ma ON BALANCE. Inertia/INERTIAL RESISTANCE is proportional to (or BALANCED with/as) GRAVITATIONAL force/ENERGY, as this balances gravity AND inertia; AS E=MC2 is CLEARLY F=ma ON BALANCE; AS ELECTROMAGNETISM/energy is gravity. GREAT. I have explained the cosmological redshift AND the supergiant stars. Stellar clustering ALSO proves ON BALANCE that ELECTROMAGNETISM/energy is gravity, AS E=MC2 is CLEARLY F=ma IN BALANCE !!! By Frank DiMeglio
I love your videos. Learning a LOT. You skipped over something though…. which I am struggling with…. M=I…. how did alpha end up r(squared?) I am not the smartest, nor the dumbest…. this was not clear.
Alpha is angular acceleration which is multiplied by Inertia. Inertia is mr^2. He didn’t skip over it either, it says it right there on the screen, I= the sum of mass*r^2
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It's my first year in engineering, I'm starting to doubt myself 'cause I really can't follow whatever my professors are teaching. Now I'm on break and I've decided to relearn everything... from the basics. This is a good way to start. I sincerely thank you.
same here dude.
You’re gonna make it! You’re on your way.
I'm going through the same thing, 1st year Mechanical Engineering here, can you tell me about what you did to improve the basics, and how it affected your Engineering studies,Thanks.
@@MechEngMahmoud Also a mech engineer major
@@joshuacajamarca3268 Yep, sometimes we need to get back to those basics to deeply understand the Advanced topics.
If it helps anyone for physics 1, Always think of things in terms of direction
- think of all 4 directions for every problem
-choose what direction you want as positive
-Keep basic ideas committed to memory like Momentum conservation, kinetic energy, potential energy etc, simply conservation formulas is more than enough dont overthink it
-learn what a derivative and integral really is, this will help you understand whats really happening and youll tie things together more deeply.
-remember that trigonometry can be used too, its a tool not baggage
and definitely learn to derive the 4 basic kinematic equations that is the quickest way to learning linear motion.
Thanks for help me, i'm doing phy 1 here, it already start to be magical 🙃
this guy is actually carrying me so hard, i havent understood this for weeks, and as usual i am saved by an 11 minute video. thank you so much
SIR. MARRY ME. I'M LITERALLY NOT EVEN JOKING AT THIS POINT WHAT A LE G EN D
I call dibs
Ur a legit god. I didn't understand any of this stuff in my lecture, but you taught me this in like 20 mins. Thanks
I can't stress enough how much I appreciated your video. Thank you!
you are the best professor ive had since starting college, thank you
Fantastic explanation of Inertia. I have been struggling with this concept until I found your concise video. Thank you!
Man, clear as day. When you can grasp the concept, the rest of the lesson becomes a satisfying curiosity. Thanks a lot.
this sounds like it could be written by a philosopher "when you can grasp the concept, the rest of the lesson becomes a satisfying curiosity"
Imagine this man was your teacher, bro you would pass everything
5.0 GPA
My Intro to Statistics teacher was like this man. I passed with a 99.7. I'd kill to have her as my teacher in everything.
You'd pass the shit out of it
he is our teacher wtf u talking about
@@brucejohnson5786 they probs mean irl teacher in school
no one has saved my math, physics, and chemistry education as this kind sir has. the only reason I'm surviving university !!
Hope you don’t stop making these videos b/c it is making physics more simple to understand
Not all heroes wear capes
Some wear thongs.
You wouldnt know, hes behind the screen. He might be flying right now
I've seen this comment from a Bob Ross video right?
Not all heroes have a good mic
@@btorresgabriel9-f614 t x d t z t z xu xu
As an architect I appreciate every video you make. Why do professors suck at explaining things as easy as you ?
I heard that teachers before to go teaching in schools, they practice some years "How to teach" but I think some professors miss that tutorial
you IQ?
He protecc:
He attacc:
But most importantly,
He say objecc
and leff
And wuhtah for water
fk man, now I can't unhear it
Objecc at ress, but we love this man
His pronunciation is cute❤️
thank you for making videos I am starting to understand physics because of you!!
I think that you describe the things in a simple way so that easy to understand , which I think is better understanding than any of professors’ theories and books
Once again, literal lifesaver. You'll get to 10 million subs in no time, you deserve it!!!
I am studying in Turkey and I am in 11th grade. We learn about this in physics. This video helped me a lot in my exam. Thank you very much.
Ap physics really taking a toll on me, these videos are the only reason I have a high grade in that class!!
Ready for Wednesday?
@@wojtek_klos my school took it last week, failed that shit
The great professor I have ever seen, I have learned from him, thank you so much and love you.
You re a legend of youtube thanks!
All these videos help every student each year, and your views will be increasing every year 🥰🥰🥰
Your amazing i can easily understand the topics were discussing in our lessons in physics..you are really a life saver,.thank you very much..😊😊
Can't even begin to express how valuable you are bro
this is a crazy good video to draw connections between translational and rotational motion
Excellent teachers not only like but hundreds hearts
❤️❤️
Bro i just got in grade 8 and my modules have all of the information it just gives what is the meaning of the laws of motions but not how to sovle the question or answer it you are a life saver and you explain it properly it is easy to undertand thank you bro❤
I mean it does'nt have all of the information sorry for the typo
How come I can’t understand this from my professor? And even when I read the book but totally makes sense with you??! You’re awesome thank you so much!!!
hi there! just wanted to say thank you for your work...absolutely brilliant!..thank you soo much..really make physics fun and interesting
This was very helpful, no one could objeck.
This the best definition and understanding of the concept. I’ve watched almost 5 videos this one is the best !
I think you made a mistake there, in circular motion we talk about moment of inertia, which is different than just inertia Because if you compare the inertia of the disc and the ring it'll be same for both of them since they have the same mass, but the moment of inertia will be different for both of them
this is genuinely excellent explanation of a torque
this is why I love this man sm
I think Im finishing my engineering degree with this channel.
Thanks this was really helpfull
I just touch the like button before I start the video
Awesome explanations :) Thanks
Next level bro... awesome explain nation
I don't understand why it is 1/2 for the circle..
0:29 you can hear sirens in the background
Good morning teacher sir, thank you so much sir.
This guy is a legend
My clueless ass watching this hours before the Exams😅😅😅😂😂
This is really helpful! Thank you so much for your help!
So my question is why is rotational inertia's coefficients 1/2,1, and 2/5. Are they just established coefficients? Will any rotating object without mass on the axis of rotation be 1 or MR^2, and will every object with mass on the axis of rotation be 1/2mr^2??
ua-cam.com/video/SL1neIyoGmA/v-deo.html
It comes from Calculus, and accounting for the distribution of mass. You can look up the derivations for common shapes of moment of inertia, like a solid uniform cylinder with a coefficient of 1/2, a solid uniform sphere with a coefficient of 2/5, and a thin uniform hoop with a coefficient of unity. The thin uniform hoop is a special case with the coefficient equal to unity, because all of the mass is concentrated at one radius from the axis of rotation.
If everyone teaches this way then we have lot more scientists
best channel. thank you!!!!
Thank you very much you really helped alot ❤
can you upload a video on quantum mechanics and quantum theory
Keep up the work
This video helps a lot.
8:58 guys in the comments , a quick question -what if we have a hollow thin looped sphere??
Great video, better than my actual professors.
wow. what a find this guys is.
am happy for this lesson
thanks for the video!!!! it was really helpful for me. Gracias de nuevo :D!!!!
Nathalia Quintero hyyy
you just blew my mind
Continue to teach us thanks 🙏
Thank you for this information sir 💛 ;) !
Thank you for the videos!
Thanks! 🧡🧡
4:50 if the total masses are equal then shouldnt they both have equal interia
rip backward button everytime my brain unfocus for a second
You’re a life saver
The only way to pass exams🙌
My final exam is in 20 minutes and this is new to me. Okay for me. Please.
Which of the two will accelerate faster?
T = I x alpha
For solid disk
I is smaller than hoop
Means lower resistance to motion than hoop
So
Solid disk will roll down faster
03:30 Rotational motion
Great video! Just subscribed to your channel!
I think its about time we order you a cape whether you wear one or not.
Got a question pls
If a mass were to continue to accelerate after a Force is disconnected, wouldn't that be a violation of the conservation of Energy.
I got it now...thanks man
He got a sweet voice 👌
I'm wondering, where does this constant come from when calculating inertia (e.g.: I=1Mr² for the hoop and I=1/2Mr² for the solid? is it something that's defined for certain shapes, if so what about custom shapes?
nvm, quick google search: basically for complex shapes you'd have to divide your shape into the available ones and then calculate them seperately to get the total inertia.
@@ikkeennigij121 thanks for the info
Is the 1/2 an approximation? Wouldn't the fraction depend on the relative thickness of the disk?
Ma keep it professional
Looking everywhere for this mr^2. Where do you go when you want to know what something "really" means?
Why doesn't the thickness of the thin hoop change the inertia? If you think about it, if the thickness of the hoop was .99999R compared to the solid disk, the formulas will state that the inertia of the hoop is twice that of the disk, which doesn't really make sense since they're very similar to each other. The only difference is that the hoop has a very small hole at the center.
Next topic: Practical applications of inertia amplification as a margin gain experiment on bicycle acceleration and velocity
thanks for saving us :)
so bike tires with spokes are harder to rotate than a solid wheel if the mass & radius are the same?
The sirens @ 0:37 had me concerned for a min
@2:37 why a1 have an acceleration unit of m/s while a2's unit m/s^2
wellbornwinter6 i cant find m/s there. He just forgot put the unit m/s^2 in a1
Great job
Thank god u exist
Thank you soooooo much!!!!!!
So is that angular acceleration rate in revolutions per second or radians per second?
Why 1/2 and not 1/4 or 1/6 or 1/8? Mass is distributed all over.
It comes from Calculus. You determine an infinitesimal mass element dm, and its corresponding radius. Then you determine what dm is, relative to the definition of the original shape. Integrate radius^2 with dm as a differential, and you calculate the total moment of inertia of the shape.
Thanks alot.................
im in love with you
*romantic music plays*
Youre about to feel friction
@@animationspace8550 They meant his teaching not getting romantic 😂
You can feel the tension
Also, why is there a time component in some moments of inertia (lb*in*sec^2) and not in others (kg*m^2)?
The reason lb-in-sec^2 has seconds in its units, has to do with correcting the pound unit to stop being a force unit, and be a mass unit instead. It is to get rid of the seconds that are in the denominator of the pound unit.
very nice!!!! you forgot m/s^2 after a
The ultimate unification and understanding of physics/physical experience combines, BALANCES, AND INCLUDES opposites, AS E=MC2 is CLEARLY manifest as F=ma ON BALANCE; AS ELECTROMAGNETISM/energy is gravity. Here's the proof. This also explains why objects (including WHAT IS THE FALLING MAN) fall at the SAME RATE (neglecting air resistance, of course), AS E=MC2 IS CLEARLY F=MA ON BALANCE; AS ELECTROMAGNETISM/energy is gravity. TIME dilation ULTIMATELY proves (ON BALANCE) that E=MC2 IS clearly and necessarily F=ma ON BALANCE, AS ELECTROMAGNETISM/energy is gravity. Gravity is ELECTROMAGNETISM/energy ON BALANCE.
ON THE CLEAR, EXTENSIVE, SENSIBLE, BALANCED, THEORETICAL, AND UNIVERSAL PROOF THAT ELECTROMAGNETISM/energy is gravity, AS E=MC2 IS clearly PROVEN TO BE F=MA ON BALANCE:
Balanced inertia/INERTIAL RESISTANCE is fundamental, as ELECTROMAGNETISM/energy is gravity. The stars AND PLANETS are POINTS in the night sky. Energy has/involves GRAVITY, AND ENERGY has/involves inertia/INERTIAL RESISTANCE; AS gravity AND ELECTROMAGNETISM/energy are linked AND BALANCED opposites; AS ELECTROMAGNETISM/energy is gravity; AS E=MC2 is CLEARLY proven to be F=ma ON BALANCE. This NECESSARILY represents, INVOLVES, AND DESCRIBES what is possible/potential AND actual IN BALANCE. Indeed, A PHOTON may be placed at the center of what is THE SUN (as A POINT, of course); AS the reduction of SPACE is offset by (or BALANCED with) the speed of light (c); AS ELECTROMAGNETISM/energy is gravity ON BALANCE; AS E=MC2 is CLEARLY F=ma IN BALANCE !!! Gravity is ELECTROMAGNETISM/energy ON BALANCE, AS E=MC2 is CLEARLY proven to be F=ma IN BALANCE. TIME dilation ULTIMATELY proves (ON BALANCE) that ELECTROMAGNETISM/energy is gravity, AS E=MC2 is CLEARLY F=ma ON BALANCE. Gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE, AS ELECTROMAGNETISM/energy is gravity; AS E=MC2 is CLEARLY F=ma ON BALANCE; AS the stars AND PLANETS are POINTS in the night sky. Accordingly, ON BALANCE, the rotation of WHAT IS THE MOON matches it's revolution. TIME is NECESSARILY possible/potential AND actual IN BALANCE, AS ELECTROMAGNETISM/energy is gravity; AS E=MC2 is CLEARLY F=ma ON BALANCE. The stars AND PLANETS are POINTS in the night sky. Accordingly, ON BALANCE, it makes perfect sense that THE PLANETS (including WHAT IS THE EARTH) will move away very, very, very slightly in relation to what is THE SUN !!! ELECTROMAGNETISM/energy is gravity, AS E=MC2 is CLEARLY F=ma ON BALANCE. Inertia/INERTIAL RESISTANCE is proportional to (or BALANCED with/as) GRAVITATIONAL force/ENERGY, as this balances gravity AND inertia; AS E=MC2 is CLEARLY F=ma ON BALANCE; AS ELECTROMAGNETISM/energy is gravity. GREAT. I have explained the cosmological redshift AND the supergiant stars. Stellar clustering ALSO proves ON BALANCE that ELECTROMAGNETISM/energy is gravity, AS E=MC2 is CLEARLY F=ma IN BALANCE !!!
By Frank DiMeglio
do you take donations?
Donate to his patreon or go fund me
I love your videos. Learning a LOT. You skipped over something though…. which I am struggling with…. M=I…. how did alpha end up r(squared?) I am not the smartest, nor the dumbest…. this was not clear.
Alpha is angular acceleration which is multiplied by Inertia. Inertia is mr^2. He didn’t skip over it either, it says it right there on the screen, I= the sum of mass*r^2
Thank you so much
thank you so much omfg