Inertia - Basic Introduction, Torque, Angular Acceleration, Newton's Second Law, Rotational Motion
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- Опубликовано: 29 сен 2024
- This video tutorial provides a basic introduction into inertia. Inertia is the property of an object to resist changes in its state of motion. According to Newton's First Law of motion, objects at rest tend to stay at rest and objects in motion tend to stay in motion unless acted on by a net external force. This video relates newton's second law of translational motion which is force equals mass times acceleration with newton's second law of rotational motion which is torque equals inertia times angular acceleration. This video provides the formula for rotational inertia of a hoop and a disk. The rotational inertia of an object depends not only on mass but the way that mass is distributed around a central axis of rotation. If the mass is distributed away from the central axis of rotation, the inertia of the object increases and there is more resistance to rotation. The general equation for the moment of inertia of a point in space is I=MR^2.
Intro to Rotational Motion:
• Rotational Motion Phys...
Angular Velocity:
• Angular Velocity Physi...
Angular Acceleration:
• Angular Acceleration P...
Rotational Kinematics:
• Rotational Kinematics ...
Intro to Torque:
• Torque, Basic Introduc...
________________________________
Parallel Axis Theorem:
• Parallel Axis Theorem ...
Rotational Dynamics:
• Rotational Dynamics - ...
Rotational Kinetic Energy:
• Rotational Kinetic Ene...
Rotational Power, Work, & Energy:
• Rotational Power, Work...
Work Done By a Constant Torque:
• Work Done By a Constan...
Angular Momentum & Torque:
• Angular Momentum - Bas...
_________________________________
What Is Angular Momentum?
• What Is Angular Momentum?
Angular Momentum Problems:
• Angular Momentum Physi...
Angular Impulse:
• Angular Impulse
Rotational Motion - Review:
• Torque, Moment of Iner...
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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 🙃
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.
@@engfani Also a mech engineer major
@@joshuacajamarca3268 Yep, sometimes we need to get back to those basics to deeply understand the Advanced topics.
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"
SIR. MARRY ME. I'M LITERALLY NOT EVEN JOKING AT THIS POINT WHAT A LE G EN D
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But most importantly,
He say objecc
and leff
And wuhtah for water
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Objecc at ress, but we love this man
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?
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!
Can't even begin to express how valuable you are bro
Thanks this was really helpfull
Thanks! 🧡🧡
Thank you very much you really helped 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
@@obviskaelyns7163 hae mummy
Awesome explanations :) Thanks
If everyone teaches this way then we have lot more scientists
This is really helpful! Thank you so much for your help!
I just touch the like button before I start the video
Ma keep it professional
Next topic: Practical applications of inertia amplification as a margin gain experiment on bicycle acceleration and velocity
Bro i just wanna meet u, u are a fuckin genius The utmost love and respect if u see this comment please like
Looking everywhere for this mr^2. Where do you go when you want to know what something "really" means?
THANK YOU :)
thank you so much omfg
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
Legend
Neat!
i finally understand
I really wonder why I decided to take physics as an elective
Can anyone tell me how a=alpha×r,since angular acceleration is only alpha not "alpha×r"?
Dude alph= a*r
a is the linear /tangential acceleration
@@sandraawuor9402 got it ty
Thanks alot
The last minete dont undestand😕
@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
i won't watch it if he does a face reveal
i think you should change your name to the all knowing
😶
Who can hear police alert behind ? 🙄🙄
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
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
PLEASE call it "ROTATIONAL INERTIA" or "MOMENT OF INERTIA" or "MASS MOMENT OF INERTIA" and not "Inertia". Inertia of both the objects is same because they have same mass and will posses the same tendency to resist any change in their state of motion and cannot be calculated using a formula.
the period of oscillation of an irregularly shaped object is 1.2 s. its mass is 1.0 kg and it is hanged
from one of its ends to oscillate, which is 3.5 cm away from its center of mass. What is its moment of
inertia?
Hhhheeeellllppppp
Fantastic explanation of Inertia. I have been struggling with this concept until I found your concise video. Thank you!
I can't stress enough how much I appreciated your video. Thank you!
no one has saved my math, physics, and chemistry education as this kind sir has. the only reason I'm surviving university !!
you are the best professor ive had since starting college, thank you
thank you for making videos I am starting to understand physics because of you!!
Hope you don’t stop making these videos b/c it is making physics more simple to understand
and still I dont understand lols
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
My clueless ass watching this hours before the Exams😅😅😅😂😂
rip backward button everytime my brain unfocus for a second
can you upload a video on quantum mechanics and quantum theory
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??
ruclips.net/video/SL1neIyoGmA/видео.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.
do you take donations?
Donate to his patreon or go fund me
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.
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
How many likes for a face reveal??
0:29 you can hear sirens in the background
ON THE ESSENTIAL AND NECESSARY RELATION OF E=MC2 AS F=MA (IN BALANCE), AS ELECTROMAGNETISM/energy is clearly gravity AS WHAT IS NECESSARILY POSSIBLE/POTENTIAL AND ACTUAL IN BALANCE:
Energy has/involves GRAVITY, AND ENERGY has/involves inertia/INERTIAL RESISTANCE. Gravity AND ELECTROMAGNETISM/energy are linked AND BALANCED opposites, AS E=MC2 IS F=ma; AS ELECTROMAGNETISM/energy is gravity ! Gravity is ELECTROMAGNETISM/energy. The stars AND PLANETS are POINTS in the night sky. ACCORDINGLY, the Moon AND THE PLANETS move AWAY very, very, very slightly in comparison to WHAT IS THE SUN !! SO, carefully consider what is THE EYE !! Finally, think about what is the speed of light (c). E=MC2 is CLEARLY F=ma (ON BALANCE), AS ELECTROMAGNETISM/energy is gravity !
Magnificent. It ALL does CLEARLY make perfect sense ON BALANCE !!! This does explain the fourth dimension, including the term c4 therewith !!! "Mass"/ENERGY involves BALANCED inertia/INERTIAL RESISTANCE consistent with/as what is BALANCED electromagnetic/gravitational force/ENERGY, AS E=MC2 IS F=ma; AS ELECTROMAGNETISM/energy is gravity. (Gravity IS ELECTROMAGNETISM/energy.) Gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE, AS E=MC2 IS F=ma, AS ELECTROMAGNETISM/energy is gravity ! Accordingly, the rotation of WHAT IS THE MOON matches it's revolution. So, notice that what is THE MOON is basically dead or inert ON BALANCE !!! GREAT. INDEED, objects fall at the SAME RATE (neglecting air resistance, of course); AS ELECTROMAGNETISM/energy is gravity; AS E=MC2 IS F=ma ON BALANCE !!! The sky is BLUE, AND what is THE EARTH is ALSO BLUE !! (Notice what is THE EYE !!) ELECTROMAGNETISM/energy is gravity. E=MC2 is CLEARLY proven to be F=ma ON BALANCE, AS gravity IS ELECTROMAGNETISM/energy !!! Great.
Carefully consider what is the Sun. (Very importantly, outer "space" involves full inertia; AND it is fully invisible AND black.) Consider what is BALANCED observer dependent/related experience ! Carefully consider the man (INCLUDING what is THE EYE) who actually IS in outer "space". NOW, think about TIME; AS the stars AND PLANETS are POINTS in the night sky. INSTANTANEITY is therefore FUNDAMENTAL to what is the FULL and proper UNDERSTANDING of physics/physical experience. So, here we have established what can basically and sensibly be understood as constituting a one dimensional relation. A white dwarf star is about the size of the Earth, AND it is ALSO (ON BALANCE) the PROJECTED form or fate (IN TIME) of the Sun !!! Great !!! Stellar clustering ALSO proves (ON BALANCE) that E=MC2 IS F=ma, AS ELECTROMAGNETISM/energy is gravity. Against what is outer "space", why would the Sun maintain what is its "preferential" existence ? The answer is THE EYE/the observer. INDEED, notice that THE EYE is invisible AND VISIBLE IN BALANCE; AS E=MC2 IS F=ma; AS gravity IS ELECTROMAGNETISM/energy ! Now, ON BALANCE, consider what is the speed of light (c). A galaxy is basically FLAT. SO, think about a TWO dimensional surface OR SPACE (ON BALANCE) as well. HALF of the galaxies are "dead" or inert, AS ELECTROMAGNETISM/energy is gravity; AS E=MC2 IS F=ma !! Carefully consider what is THE EYE !!
TIME dilation ULTIMATELY proves (ON BALANCE) that E=MC2 IS F=ma, AS ELECTROMAGNETISM/energy is gravity. INDEED, TIME is NECESSARILY possible/potential AND actual IN BALANCE; AS E=MC2 IS F=ma; AS ELECTROMAGNETISM/energy is gravity. Gravity IS ELECTROMAGNETISM/energy. Great.
E=MC2 IS F=ma. This NECESSARILY represents, INVOLVES, AND DESCRIBES what is possible/potential AND actual IN BALANCE, AS ELECTROMAGNETISM/energy is gravity. Gravity IS ELECTROMAGNETISM energy.
Excellent !!! BALANCE and completeness go hand in hand !!!
GRAVITATIONAL force/ENERGY IS proportional to (or BALANCED with/as) inertia/INERTIAL RESISTANCE, AS E=MC2 IS F=ma ON BALANCE; AS ELECTROMAGNETISM/energy is gravity. Gravity IS ELECTROMAGNETISM/energy. Consider WHAT IS THE MAN who IS standing on what is THE EARTH/ground. Touch AND feeling BLEND, AS E=MC2 IS F=ma; AS ELECTROMAGNETISM/energy is gravity. Think about TIME !!! NOW, the stars AND PLANETS do REMAIN AS what are POINTS in the night sky. TIME dilation ULTIMATELY proves ON BALANCE that ELECTROMAGNETISM/energy is gravity, AS E=MC2 IS F=ma. This explains the cosmological redshift AND the "black holes". Gravity IS ELECTROMAGNETISM/energy. It ALL CLEARLY makes perfect sense, AS BALANCE AND completeness go hand in hand. Gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE, AS E=MC2 is CLEARLY F=ma ON BALANCE, AS ELECTROMAGNETISM/energy is gravity. The fact that the rotation of WHAT IS THE MOON matches it's revolution is not a meaningless coincidence, AS the fact that both the Sun AND the Moon are the SAME SIZE in the sky is not some sort of a meaningless coincidence. Notice the match with the size of what is THE EYE. Magnificent !!! It ALL CLEARLY makes perfect sense, AS BALANCE AND completeness go hand in hand. E=MC2 IS CLEARLY F=ma ON BALANCE, AS gravity AND ELECTROMAGNETISM/energy are linked AND BALANCED opposites; AS ELECTROMAGNETISM/energy is gravity ON BALANCE !!! Gravity IS ELECTROMAGNETISM/energy. Great !!! Carefully consider what are the POINTS in the night sky ON BALANCE !!! Think about the necessity (or essential nature) of TIME, AS E=MC2 IS clearly F=ma ON BALANCE !!! Great. It is proven.
("Mass"/ENERGY IS GRAVITY. ELECTROMAGNETISM/energy is gravity. E=MC2 IS F=ma.) Consider what is THE SUN AND what is THE EARTH/ground in DIRECT comparison, AS the stars AND PLANETS are POINTS in the night sky !!!
GREAT !!! E=MC2 IS F=ma !!!!
By Frank DiMeglio
All these videos help every student each year, and your views will be increasing every year 🥰🥰🥰
thanks!
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
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..😊😊
I am 60 years old. Have two science degrees and still have difficulty grasping the moment of inertia. First off. There is no moment. It is a measure. So why is it not called the measure of inertia?
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
How’s here after covid 19?
This comment has not aged well..
Not a good explanation. Your terminology is not always correct. You also mix up inertia and moment of inertia.
Good morning teacher sir, thank you so much sir.
9:00 two years of shitty university profeesors didn't over this, fuck man
ty... a lot
Plz can u do a face reveal🙏🤗
hi there! just wanted to say thank you for your work...absolutely brilliant!..thank you soo much..really make physics fun and interesting
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
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?
@@wojtekklos7857 my school took it last week, failed that shit
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
this is a crazy good video to draw connections between translational and rotational motion
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.
This was very helpful, no one could objeck.
Keep up the work
ok i get inertia the first part. but apparently im too stupid to understand the rest :)
o fuck i guess that is covered in the 3 hour class sheeeeeet lol
The sirens @ 0:37 had me concerned for a min
He got a sweet voice 👌
am happy for this lesson
i live here now... neva gonna leave.
Once again, literal lifesaver. You'll get to 10 million subs in no time, you deserve it!!!
Is the 1/2 an approximation? Wouldn't the fraction depend on the relative thickness of the disk?
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.
What moshen? Poop?
im in love with you
lahian mo kohhh
4:50 if the total masses are equal then shouldnt they both have equal interia
at this point i feel like you are just making things up as you go lol. im so lost
so bike tires with spokes are harder to rotate than a solid wheel if the mass & radius are the same?
life saver
This video helps a lot.
So is that angular acceleration rate in revolutions per second or radians per second?
I think its about time we order you a cape whether you wear one or not.
Excellent teachers not only like but hundreds hearts
❤️❤️
love u
nice