How did Newton guess the Inverse Square Rule for Gravitation || for Class 9 in Hindi
ฝัง
- เผยแพร่เมื่อ 20 ธ.ค. 2024
- In this Science (Physics) video in Hindi for Class 9 we explained how Newton could have guessed the inverse square rule for the universal law of gravitation. This is a topic from Chapter 10 - 'Gravitation' for class 9th from NCERT.
It is said that Newton guessed this inverse square law from Kepler's 3rd law of planetary motion which states that the cube of the mean distance of a planet from the Sun is proportional to the square of its orbital period T.
Here, another concept has been used. For uniform circular motion the acceleration is towards the centre and its magnitude is equal to the ratio of the square of the speed to the radius of the circular path.
***************************************************************************
🔴 Click here to watch the whole playlist on Chapter 10 : 'Gravitation' for Class 9 :
• Introduction to Gravit...
***************************************************************************
Previous videos :-
🔴 Introduction to Gravitation
• Introduction to Gravit...
🔴 Universal Law of Gravitation
• Universal Law of Gravi...
🔴 Free Fall || Calculating 'g'
• Free Fall || Calculate...
🔴 Motion Under Gravity
• Motion Under Gravity |...
🔴 Motion Under Gravity (Part 2)
• Motion Under Gravity (...
🔴 Mass and Weight
• Mass and Weight || for...
🔴 Weight of an object on the moon
• Weight on Moon || for ...
🔴 Kepler's Laws of Planetary Motion
• Kepler's Laws of Plane...
Having a kind of magic in his voice.
He made me understand everything,now knowledge about this flowing my mind.
Thanks
Sir plzz..... explain the derivation of inverse square rule with another steps.......
I am not getting it
You have explained systematically 👍....
But some people prove this by Taking F = Centripetal Force
Is it correct ??
@Abhishek Patel yes, we can also prove this by using f = centripetal force i.e. f=mv^2/r
what a shit doubt?
Do you understood what you just said😂
Bro pay some attention, write equations and logics on a sheet of paper
Centripetal is the original of newton , how he arrived
But you can't ignore Ncert😊
Sir, I have a question here. You considered here that v is the velocity and velocity = 2πr/Time. But, velocity = Displacement/Time and 2πr isn't the displacement. So, why
v = 2πr/T here?
It is circular path
A circular path can't be displacement
@@debanjanbiswas1702 so why we don't denote v as s(speed
I have found it just some week ago. In a circular motion the speed is equal to instantaneous velocity. So v = 2πr/t = s (speed)
@Debanjan Biswas sir himself had said that he had taken v as speed at 5:50
Sir you are the the best mathematics and physics teacher on TH-cam.
Sir lastly it was F proportional to v²/r but how come it becomes F proportional to 1/r . 1/r as . Means multiplication
V²/r = (1/r) / r
= (1/r) × (1/r)
= 1/r²
Mostly effected hai sir life me1st time itni achhe se physics samajh me ai🙏🙏🙏😍👏👏
Sir pure TH-cam me aap jaisa koi teacher nhi hai
Aap Great ho Sir ❤
Why Gravitational force Acts?..
There is no Force of Gravity..
They are just Following Geodesics in Space-Time...
Sir 😀
10:28 birds are chirping😊😊
Better than ncert of cbse
🙏🙏🙏
True
Yes but I am 6th and DIDENT look at the book
Also bro these laws of planetary motion are not given in NCERT book in gravitation chapter so this is a lot better
@@Leelawati580 it's given there on page no.133 read it carefully.....
The way of teaching is very good 👌
Thank you very much for your support.
🙏🙏🙏
Today after getting to bsc level my doubts is clear
Thank you sir
And a request for you to make vedio on bsc
So you are qualified for bsc without clarity on gravitational equation.
Great now I can see india as a super power.
Please dont mind bro, I am not judging you right now even I am not a science student I just read it because I like it but you can also see that this is horrific.
Videos on BSc physcis has already been made in another channel
Nice explanation sir
you are the ff player
Yes
We need more teachers like you sir , great explanation
Wah sir kya explanation😊😊
Sir aapne bohot ache se padhaya hai.
Masaallah kya smjhane ka tatika h sir thanks sir..🌹
Your explanation is very very nice really it's very awesome..👌👌👌🤞🤞🤞🤞👌
sir i am a student of class 10... this is not really me. actually we both are here in front of the laptop screen and while watching your video we have found a question that if both the objects apply same force of attraction or lets say gravitation then why the smaller object revolve around the bigger object? I mean to ask why they dont stay stable in the universe?
Consider two masses, one big and one small.
If revolution happens, it is not correct to say that the small revolves around the big.
Reality is - both revolve around the common centre of mass. This centre of mass resides very close to the centre of the big mass, so we don't see it's revolution.
@@edupoint.secondary thank you so much...............................................................................................
One more way to solve it can be if we consider newton's 2nd law of motion then ... acceleration is inversely proportional to mass...therefore, the bigger the mass the smaller the acceleration and vice versa
14:33 pe 2 1/r multiply 1/r fiie se kaise aaya
Please explain
Wow sir very nice explanation 👏👏
🙏🙏🙏
Thank you.
Great explanation. Better than my school teacher. I understand everything.
Ye to aapka pyaar hai, jo aapko aisa lag raha hai.
Thanks sir
Tomorrow is my class 10th presentation and I chose to explain this topic to my class .
With the help of this video I can perform well
You deserve millions of subscribers 🤗🤗🤗🤗🤗🤗🤗❤❤❤❤❤
Sir aap sirf 9th hi you karate ho aap to 11 th 12 th bhi karao pls
You teach so well and to the point
Thanku sir
I understand it very well
in my way you are the best teacher of the world for ever.
once again thanku sir.
Yes
Sir thoda fast boliye 1.5x par dekh raha hoon !
😄😄😄😄😄
2x 🤣
Isko dekhne ke liye to 2 x se bhi jada speed lagani padhegi 😅😅😅😅😂😮😮😊😊
Sir u explained this in a very beautiful way thank you so much sir I watched many other videos but no one explained it like u thanks sir
sir gravitation ki vajah se earth toh sun ki taraf chali jayegi ??? . Need answer, please
It has been explained in the introductory video.
Sir kya aapne F is directly proportional to the product of masses explain kiya hai???? Uske baad pura equation samaj mai aa jayega. Btw very nice explanation 😊
Hmmmm.
Mujhe lagta hai ki maine iss video me bhi gala phaad phaad ke kaha hai ki playlist ka link description box me hai. 😄😄😄😄
By the way.... thank you very much for your huge support and encouragement.🙏🙏🙏
@@edupoint.secondary okay abhi dekh leta hu
@@mysteriousspace6258 lol😆😆😆😆
Thank you sir for the great explination👍👍👍
You solve all problems of student's which come in our study😊
Sir aap class 10 ko padhate hai kya?
Agar haa to please channel ka naam batayen.
Very nice explaination sir. Please tell that why we should consider circular orbit only as orbit is elliptical
Best expalaination sir👍🏻👍🏻👍🏻👏🏻👏🏻👏🏻👏🏻
🙏🙏🙏
Thank you for your huge support.
Wlcm sir
Thankyou sir💗
Sir your video is very helpful for me.
It gives me a clear concept of inverse square law.
Your teaching style is very amazing.
Thank you so much.
Thank you very much for your support.
🙏🙏🙏
I saw ur all video's of this chptr & trust me this chptr bcm my fav chptr, bcoz of ur crystal clear explanation sir...... Tnks s lot sir.
Bro so many shortcuts 😂😂😂😂😂 chapter=chptr become=become and all
@@samiksha7899
Actually it's bcm my habit.....
By the way I'm not boy I'm a girl dude!
Thank you sir ❤️❤️
Amazing Sir 🙏🙏🙏 Mujhe Bhi Yureka Yureka wali feelings aa rhi or confidence bhi that's because of you sir🙏🙏☺️
Sir I am confused with v is v velocity or speed
Here velocity is speed
As Newton calls it Velocity as it tends to move in a straight line.
What is the significance of r²
Very nice explanation.
Sir you have very smooth voice, words are very clear THANKS
Your explanation was really very helpfull to me..
There were too much confusion in this particular topic of this chapter in my head...
Coz in NCERT book.. it is not explained properly at all..
This concept is very clear to me now by watching this video...
Thanks a lot..🙏🏻🙏🏻🙏🏻
And I am very impressed by this video and now I am your new subscriber..😉😉
Beauty lies in the eyes of the beholder.
🙏🙏🙏🙏
@@edupoint.secondary exactly 👍🏻🔥🙏🏻
Can u help me out to clear this *DOUBT* ⬇️🧐
If we take an example of pencil and the earth since the earth is attracting a pencil with some force and according to Newton's third law of motion here also the pencil will also attract the earth with same force but since the mass of earth is larger than that of pencil that's why the pencil gets attracted towards Earth and falls on it.
On the other hand..
*We know that Sun attracts Earth and by the Newton's third law of motion the Earth also attracts Sun since the mass of Sun is greater than the earth , then why the earth does not get attracted towards Sun and falls on Sun's surface?*
Already explained in an earlier video.
Bro because
The force applied by sun is used by the acceleration of earth because EARTH is revolving arounding it and from Newton 2 law of motion F IS PORTIONAL TO A
sir i see all my science doubts on your channel because you clear all my doubts very easily thank you sir🤗🤗
What is the fundamental reason why the r-square in the Newton's law of universal gravitation is square, instead of r-cube (whereas the M and m at the numerator of the formula associates more with the cube of space, in the sense of scale)?
Explanation is very clean and clear.
Really useful!!!🙏
Thank you!!!
Thank you 👍👍
Excellent and ecstatic way of teaching... Sir you are brilliant.
Sir why we take d2 in the f is inversly propotional to the 1/d2
How 2π is a constant ?
It's quite simple. A constant is something whose value remains same for all condition. For eg If you take any size big or small you find it's circumference by multiplying radius with 2π
Sir you simply explained the topic
Sir why f is proportional to 1/d^2
Sir the most best explanation of this topic ever seen
As like your every lectures, this is also amazing......😊😊😊
👏👏👏👏👏 ...............
I'm greatly impressed by your excellent experience in PHYSICS.
🙏🙏🙏
Thank you very much for your huge support.
waaoo i find a great video............thanks sir
🙏🙏🙏
Why do I understand this better when a person teaches on TH-cam and not my teacher
Thank you so much.....sir.....☺️☺️☺️........for posting such videos....🙃🙃🙃........and yess, you are much better than my school's teacher......💞☺️💕
*Sir Plz help Me....
How{ 4 m pi² / K = Constant }*
Sir iss video me aap bole... Ki planet ki ghumne ki speed fixed nai... Hoti...
Pr Kepler's law me... Bola tha ki... Agar suppose itne distance ko 30 din lagte hai toh...
Fir aage Jake utne distance ko 30 hi din.. lagenge so...
Sir aise kaise speed toh fixed nai hoti n... Aapne bola..
amazing explanation sir . Teachers like you 🙏 help a lot in preparation for exams
Sir Surya se Prithvi pr F force lgega... But Prithvi surya pe F force kyu lagayegi...?? Kam force lagana chahiye na prithvi ko sun pr
If gravitational force act between them so why they do not collide?
Very very nice video
If earth and sun apply gravitational force to each other, why they did not collapse??
Because of angular momentum of earth they do not colapse
Sir kya explain kiya hai. Tutor bhi nahi samjha paya. ulta apne to free mein kar diya
Amazing sir 😇
You explained so nice👏👍
10:26
10:27
10:28
Samaj Nahi Aya Sirji
😓😓😓😓😓😓😓😨😨😨😨😰😰😰😭😭😭😭😭
Why 2pie is constant
Same question
Nice sir
Sir,
Your lecture content is directly proportional to ch 5 of pearson
💟👍
🙏🙏🙏
In which class you right now??
@@sudhasingh5745 10
Sir,but velocity=displacement/time. Please explain😊
It is instantaneous velocity, for sure.
Thanku sir
@@edupoint.secondary please explain what is intataneous velocity
The great teacher who made the videos at the morning I think around 3 to 6 o clock to make case study carefully listen the sound of bird 9:54
Crsytl clearrr💝🙂
Sir aapne bola ki hm ye maan lete h ki planet elliptical path me ni circle path me move krega. But sir aise toh formula wrong hoga n kioki real me toh planet elliptical path me hi move krta h n .🙄🙄🙄
????
Usse koi fark nahi padta.
Physical laws to same hi rahega.
@@edupoint.secondary However if circle is a special case of an ellipse and we have used that assumption, then how if F proportional to 1/r^2 for all cases?
Exactly....r
Anyone thinking about the 2 foci of ellipse😅😅
Say something about it
How 2 pi is constant sir
Best teachings i have never seen🌟🌟🌟
🙏🙏🙏🙏🙏
@@edupoint.secondary THANKS TO YOU....I WILL TELL MY ALL FRIENDS TO STUDY FROM HERE..
Sir velocity = displacement/time hota hai
Aapne distance/time liya hai phir to ye galat hai na. Kyuki displacement 0 hoga after 1 revolution
Velocity also known as speed in straight line motion 😊
Bcz if travel A to B in straight line then distance and displacement is equal
Very nice explanation sir 👌👌👌👌👌👌
Thank you..
🙏🙏
Thank you so much sir!! You made this topic so easier to understand!!
Sir ke heart or pin Dena toh
Planet moves in an elliptical path and its radius is not fixed because it's two centre but aapne to circle figure me banaya hai and also use circle properties v is proportional to r\t
Physical laws change nahi hote.
Maza aya 👌🏻🤩
Sir who is capilar
Kepler
Sir all is well but first you said acceleration is due to change of direction , and after some time you said acceleration is due to force between planet and sun kindly explain this ?
Sir please make a video on hall effect and zeeman Effect .
I am student of BS in physics
I am pursuing msc even I watch your videos ❣️❣️
Thank you so much sir 🙏
Sir the video was very interesting, helpful and masterpiece. I thought that the proof of universal law of gravitational force is experimental. Thank you very much sir. Manthan Mondal.☺☺☺☺☺👍👍👍👍👍💟💟💟💟💟
sir vector quantity ka mtlb?
The quantity which has magnitude as well as direction for example- Displacement, Velocity etc
Nyc video 🎥🎥🎥
THANKS SIR....🥰💯👌🏿👌🏿...
All doubt clear sir
🙏
Too nice sir it rlly helped to understand such an imp concept in 15 mins
Gajab 😊
Thank you
Thank you
Thank you
Thank you
Very much sir
For this simple and effective explaination.
Now I am fully ready for tomorrow's test.
🥳🥳