Live Classes, Video Lectures, Test Series, Lecturewise notes, topicwise DPP, dynamic Exercise and much more on Physicswallah App. Download the App from Google Playstore ( bit.ly/2SHIPW6 ) Physicswallah Instagram Handle : instagram.com/physicswallah/ Physicswallah Facebook Page: facebook.com/physicswallah Physicswallah Twitter Account : twitter.com/PhysicswallahAP?s=20 Physicswallah App on Google Play Store : bit.ly/2SHIPW6 Physicswallah Website: physicswallahalakhpandey.com/ LAKSHYA Batch(2020-21) Join the Batch on Physicswallah App bit.ly/2SHIPW6 Registration Open!!!!
What will you get in the Lakshya Batch? 1) Complete Class 12th + JEE Mains/ NEET syllabus - Targeting 95% in Board Exams and Selection in JEE MAINS / NEET with a Strong Score under Direct Guidance of Alakh Pandey. 2)Live Classes and recorded Video Lectures (New, different from those on TH-cam) 3)PDF Notes of each class. 4)DPP: Daily Practice Problems with each class having 10 questions based on the class of JEE Mains/NEET level. 5)Syllabus Completion by end of January, 2021 with topicwise discussion of Last 10 Years Problems in Boards, JEE Mains/NEET within Lecture. 6)The Complete Course (Video Lectures, PDF Notes, any other Study Material) will be accessible to all the students untill JEE Mains & NEET 2021 (nearly May 2021) 7)In case you missed a live class, you can see its recording. 8)You can view the videos any number of times. 9)Each chapter will be discussed in detail with all concepts and numericals 10)Chapterwise Approach towards JEE Mains/ NEET & Board Exams. ****Test Series for XI & XII**** We provide you the best test series for Class XI,XII, JEE, NEET chapterwise, which will be scheduled for whole year. The test series follows very logical sequence of Basic to Advance questions.& Evaluation of Test and Solution to all the questions at the end of the test. Class 11 Physics chapter 8 || Gravitation 02 || GRAVITATIONAL FIELD || IIT JEE MAINS / NEET || th-cam.com/video/moPw_KF1RoU/w-d-xo.html 11 chap 8 | Gravitation 03 | Gravitational Field due to Solid Sphere + Hollow Sphere JEE MAINS /NEET th-cam.com/video/TFvewBsraIY/w-d-xo.html 11 chap 8 | Gravitation 04 |Acceleration due to gravity g and Variation in g gravity JEE MAINS/NEET th-cam.com/video/W4DYiHRwlLg/w-d-xo.html 11 chap 8 | Gravitation 05 | Gravitation Potential : Introduction with Derivation IIT JEE MAINS/NEET th-cam.com/video/EL5QRN_by4k/w-d-xo.html 11 chap 8 | Gravitation 06 | Relation between Gravitational Field and Potential JEE MAINS / NEET | th-cam.com/video/fAEdbwfwFMA/w-d-xo.html 11 chap 8 | Gravitation 07 | Gravitation potential due to Hollow and Solid Sphere IIT JEE MAINS/NEET th-cam.com/video/MkXN0yqJRFM/w-d-xo.html 11 chap 8 |Gravitation 08 | Gravitational Potential Energy IIT JEE MAINS/NEET | th-cam.com/video/7TKUangZtOs/w-d-xo.html 11 chap 8 | Gravitation 09 | Escape Velocity -Derivation , Concept , Numerical IIT JEE MAINS /NEET th-cam.com/video/7sFOFRkpH2A/w-d-xo.html 11 chap 8 || Gravitation 10 || Motion Of Satellites - Orbital Velocity IIT JEE MAINS /NEET || th-cam.com/video/JD72ZSFf0nE/w-d-xo.html 11 chap 8 | Gravitation 11 || GeoStationary Satellites Geosynchronous Satellites IIT JEE MAINS/NEET th-cam.com/video/bTJA2xT3DwY/w-d-xo.html 11 chap 8 || Gravitation 12 || Kepler's Laws of Planetary Motion IIT JEE MAINS / NEET || th-cam.com/video/nlxExEAqmaM/w-d-xo.html
Up Next : Gravitational 02 : Gravitational Field : under processing Coming Soon : Chemical Equlibrium 05 :Le Chatelier Principle Coming Soon : Rotational Motion 16 : Rolling Series 04 : Forces in Pure Rolling
Timestamps Newton's Law of Gravitation - 4:22 Q1 - 16:05 Q2 - 22:45 Q3 - 43:00 Principle of Superposition of Force - 53:08 Example Qn - 56:24 Special Question about Force between an Object and Point Mass - 1:03:10 Answer of this Special question is [-GmM(2a+L)] /[ aL(a+L)] Half Ring Qn - 1:19:10 Answer of Half Ring Qn is (d)
Integral dF =Integral dFsintheta F=Integral Gmdm sintheta /R^2 F=Gm/R^2 Integral dm sintheta Since it is ring we use mass per unit length to substitute in the place of dm. M/pi R =dm/R dtheta dm=dtheta M/pi F=Gm/R^2 Integral dtheta Msintheta/pi F= GmM/R^2 pi Integral sintheta dtheta F= (GmM/R^2 pi )[-costheta] (theta = 0 to pi) F= GmM/R^2 pi (-(-1-1)) F=2GmM/R^2 pi F =2GmM/R^2 pi (j)
1:05:18 I was like " Aaj to pehli baar me hi sahii answer lg gya" Sir at 1:05:20 "ruko zraa sabar kro " Ekdum se waqt badal diya.. Jazbaat badal diye sir 😂😂
Mr Alakh Pandey my daughter is preparing for neet, went through your lectures. It is great yeoman service you are providing to student. God bless you and your team lectures on physics
Sir does his leutures will help in neet preparation I m doing self study for neet n I m totally confused so can I follow him can u pls help me out by replying to my msg 🥺🥺🥺🥺🥺
@@appufan716 surely mr Alakh Pandey teaches physics I have never seen any teacher like him in my life.Definitely you should follow his lectures it will take you long way.
A UNBELIEVABLE LECTURE..... NOT BY A HUMAN.... BY A GOD...💝💝💝💝♥️💙💙💚💚❤️💖💖🥰🥰💞💞 गुरुर्ब्रह्मा गुरुर्विष्णु र्गुरुर्देवो महेश्वरः गुरु साक्षात परब्रह्मा तस्मै श्रीगुरवे नमः ___________ Sir, Aap hamare TRUE TEACHER ho... Love u sir, from Heart 💝
I am a 12th student ... At first Alakh sir told that if your gravitational force is not clear then you can't understand electrostatic ... Then I came here to clear my weakness and now sir told .... "Agar rotational motion nhi padhe ho to Kya ghas chiroge" ....😖😖😖
In 2022 I am seeing this video and I am thankful to alakh sir we all are proud of you sir you are the best teacher........................................ Sir, In my school I am not able to understand what school teacher explained us but when you are here no fear of understanding concept .....
Solution to last question- For elementary mass dm, (here, theta = @) dm = Mdx/πR = Md@/π (dx=Rd@) Now, dF = Gmdm/R^2 = GmMd@/πR^2 But net force will be only the y component (since, x component gets cancelled by the symmetric half) So, F net = dFsin@ Put df=GmMd@/πR^2 Fnet = GmMsin@d@/πR^2 Now, integrate from 0 to π , answer will be option (D)
@DNA yes bro mne bhi rat ko ek din video dekh raha tha papa a k puchhne lge ye phurr kuchuk zurrr ye kya kar rae hain sir Mne bola feel le rahe h question ki us din k nad se headdphones k sath hi dekhta hu😂😂😂😂😂
@Prince guys look i am in 12th right now and i felt the same problem in my 11th, Try changing your source of question solving and always solve basic ques first and don't loose the confidence it took me 2 years to gain it back or notes revise karne k baad hi ques solve karna it helps
Integration of Dfsin(Ø)...... Take Df =Gmdm/R².... Then there is problem of dm..... So mass per unit volume for dm = dm/RdØ ,, & for half ring =M/( pi)R...... Mass per unit volume will be same as body is symmetric so dm/Rdø =M/ (pi)R from this dm=MRdø/(pi) R.... dm =Mdø/pi..... Now integrate & take value of ø from 0 to 180 Ans will come out to be 2GmM)/(pi)R²
यह jee mains ka एक scoreing topick है गुरुत्वाकर्षण की series शुरू करने के लिए बहुत बहुत धन्यवाद गुरू जी! 🙏🙏 जन्मदिन की अनन्त शुभकामनाएँ गुरु जी! आप जिये हज़ारो साल ! 🙏🙏🙏
@@InspoShreyo mass of element dm of ring is M/piR(circumference of half circle) *lenth of small element now length of small element = radius*small angle d(theta) now force on m due to small element dm on ring = mMd(theta)/πR^2 now this is force F on m due to small element dm net force is Fsin(theta) if you integrate it to from 0 to π..you will get the answer.
@@rajeshkumarjena2309 thats actually gravitational force acting on m due to dM of ring which is, F=Gm1m2/r^2 and here this F is =GmdM/R^2 where we found dM to be equals to Mdθ/π (dM=M/πR × Rdθ (as dL=Rdθ) so now F=GmMdθ/πR^2
The lectures, the contents uploaded here are just incomparable❤️! Currently, huge no. of students are studying from here I'm sure...and the coming generation too, will be seen here with a new zeal in each coming new year!💫💫🔥🔥 Humble honour to you Sir!❤️❤️
@@alokgurjar8953 where it is available please send me the link 🥺🙂meine woh dekha tha 1 shots but woh revision ke liye... Actually I haven't started those chapters that's why
After watching S- block elements and Hydrogen in pace series(no other option🙂) and then coming back to alakh sir for gravitation is just different type of excitement .
My school teacher fiinished this chapter in just two days 😂😂😂😂🤣🤣 Alakh sir na hote toh it was impossible for me to understand this chapter😘😘😘love u physics n chemistry ke superman 🤗🤗 Stay blessed!!!!!!!!!
@@ejaz8295 hamari madam ne kabhi feel hi nahi hone diya ki physics hard hai....kyuki usne kbhi zindagi me numericals krvaye hi nahi.....usne to SHM, Elasticity chapters syllabus me se delete krva diye ha taki hame problem na aaye....usne sirf article hi krvaye ha hame.....aur vo khud ko best teacher kehti ha😊😊........
Old is gold this is not enough for alakh sir he deserves more successs in life and i hope he get it in 2023 or coming years he gets more n more❤❤❤ lots of good wishes sirr....ur like a god for students difficult hours🙏❤
hints to solve the last question: 1) form overall expression for force acting on m. 2) try integrating it 3) your d(_ _ _ _) won't be suitable 4) try finding the value of dF 5) still not enough, try finding value of dm 6) again, still not enough, try finding value of dx or dL or another expression in d( - - ) 7) now its enough :) you can easily take out all the constant values and integrate the expression under the integration symbol (make sure to use proper limits by considering symmetry and use the hints which sir said)
#Answer of last question Option (d) 2GMm/pi R^2 is correct. If som1 get confused plz take the length of mass dm and M which is RdQ (arc) and pi R And equating the ratio M/pi R = dm/RdQ From this put value of dm in integration of Gmdm sinQ/R^2 by taking the limits from angle 0 to 180 . Hope u will get the ans and it will help you 😊😊 Thank you very much sir 😊😊
Bro han tumne ek or cmnt bhi kiya tha pr mai dhundh nhi pa rha vo puchh skte ho Mai is id ko use nhi krra tha bde dino se isiliye reply me time lg gya 😅
@@RiteshkrRawat-dv6dt bro when u take a small element dm then it will make an arc on the semicircular ring with the center Also length of the arc say radius is R and the small angle is dQ so from the formula of arc length which is Lenght= Q x radius So Q is dQ and radius is R so it will be RdQ U can check the formula on google also Hope it helps 😊
@Aman Kirola bhai allen mai jane wale students agar youtube se padhe tou its not paisa waste bcoz allen mai ek time pr bohot sara stuff manage karna padta hai or isliye kabhi kabhi concepts reh jate hain ,ek baar allen jakr dekh tab ye stupid comment karna
Hlo sir m uptgt ki tiyari krrhi hu or tution bhe pdhane lgi hu aap k lecture dekh kr hm bhut motivate hue or khud kuch project bnay h or bccho ko pdhate h bccho ko physics m mja aane lga h ye sb aapki vjh s h aapka bhut bhut dhanyevad aaj hmko bhut tej fever h mummy subhe s pdhne nhe de rhi the hm revision krrhe h 🙏
@muskannthakur yes the solar system gravitational effect keeps the earth stable on axis and earth revolves around the sun and rotate on its axis ,, this shloka is in rigveda and Surya siddhant book 👍🙏🙏🙏🙏🙏
ANSWER TO HOMEWORK QUESTION IS: 2GMm / pie (r^2) Hint: Find df from mass m at d theta , the cos components will get cancelled only the sin would remain, and then can be solved by integration of df sin theta from 0 to 180. {m/pie r = dm / rd theta } from conversion of dm to d theta
![BOWKYLION - วิงวอน (ex-change) [Official MV]](http://i.ytimg.com/vi/cLdnZWDaO-w/mqdefault.jpg)
![ลองสุ่มไอโฟน 990 โกงมั้ย? [ โกงมั้ยครับ ep.101 ] | DOM](http://i.ytimg.com/vi/bfsWe0j492k/mqdefault.jpg)
Live Classes, Video Lectures, Test Series, Lecturewise notes, topicwise DPP, dynamic Exercise and much more on Physicswallah App.
Download the App from Google Playstore ( bit.ly/2SHIPW6 )
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Physicswallah Website: physicswallahalakhpandey.com/
LAKSHYA Batch(2020-21)
Join the Batch on Physicswallah App bit.ly/2SHIPW6
Registration Open!!!!
What will you get in the Lakshya Batch?
1) Complete Class 12th + JEE Mains/ NEET syllabus - Targeting 95% in Board Exams and Selection in JEE MAINS / NEET with a Strong Score under Direct Guidance of Alakh Pandey.
2)Live Classes and recorded Video Lectures (New, different from those on TH-cam)
3)PDF Notes of each class.
4)DPP: Daily Practice Problems with each class having 10 questions based on the class of JEE Mains/NEET level.
5)Syllabus Completion by end of January, 2021 with topicwise discussion of Last 10 Years Problems in Boards, JEE Mains/NEET within Lecture.
6)The Complete Course (Video Lectures, PDF Notes, any other Study Material) will be accessible to all the students untill JEE Mains & NEET 2021 (nearly May 2021)
7)In case you missed a live class, you can see its recording.
8)You can view the videos any number of times.
9)Each chapter will be discussed in detail with all concepts and numericals
10)Chapterwise Approach towards JEE Mains/ NEET & Board Exams.
****Test Series for XI & XII****
We provide you the best test series for Class XI,XII, JEE, NEET chapterwise, which will be scheduled for whole year.
The test series follows very logical sequence of Basic to Advance questions.&
Evaluation of Test and Solution to all the questions at the end of the test.
Class 11 Physics chapter 8 || Gravitation 02 || GRAVITATIONAL FIELD || IIT JEE MAINS / NEET ||
th-cam.com/video/moPw_KF1RoU/w-d-xo.html
11 chap 8 | Gravitation 03 | Gravitational Field due to Solid Sphere + Hollow Sphere JEE MAINS /NEET
th-cam.com/video/TFvewBsraIY/w-d-xo.html
11 chap 8 | Gravitation 04 |Acceleration due to gravity g and Variation in g gravity JEE MAINS/NEET
th-cam.com/video/W4DYiHRwlLg/w-d-xo.html
11 chap 8 | Gravitation 05 | Gravitation Potential : Introduction with Derivation IIT JEE MAINS/NEET
th-cam.com/video/EL5QRN_by4k/w-d-xo.html
11 chap 8 | Gravitation 06 | Relation between Gravitational Field and Potential JEE MAINS / NEET |
th-cam.com/video/fAEdbwfwFMA/w-d-xo.html
11 chap 8 | Gravitation 07 | Gravitation potential due to Hollow and Solid Sphere IIT JEE MAINS/NEET
th-cam.com/video/MkXN0yqJRFM/w-d-xo.html
11 chap 8 |Gravitation 08 | Gravitational Potential Energy IIT JEE MAINS/NEET |
th-cam.com/video/7TKUangZtOs/w-d-xo.html
11 chap 8 | Gravitation 09 | Escape Velocity -Derivation , Concept , Numerical IIT JEE MAINS /NEET
th-cam.com/video/7sFOFRkpH2A/w-d-xo.html
11 chap 8 || Gravitation 10 || Motion Of Satellites - Orbital Velocity IIT JEE MAINS /NEET ||
th-cam.com/video/JD72ZSFf0nE/w-d-xo.html
11 chap 8 | Gravitation 11 || GeoStationary Satellites Geosynchronous Satellites IIT JEE MAINS/NEET
th-cam.com/video/bTJA2xT3DwY/w-d-xo.html
11 chap 8 || Gravitation 12 || Kepler's Laws of Planetary Motion IIT JEE MAINS / NEET ||
th-cam.com/video/nlxExEAqmaM/w-d-xo.html
Plz make video on posilies law
Sir ads dhyaan kharab kr de rhi hai
@@AB-lt8my aukat me rah sir ko kuch mat bol varna .....
agar khud nhi pdha skte toh dusro ko mat bolo
@@AB-lt8my f**K off
Up Next : Gravitational 02 : Gravitational Field : under processing
Coming Soon : Chemical Equlibrium 05 :Le Chatelier Principle
Coming Soon : Rotational Motion 16 : Rolling Series 04 : Forces in Pure Rolling
sir u forgot to pin this comment
Sir Thermodynamics kitna rehta hai ??
Sir aapne kaha tha ki next video will be on Chemical Equilibrium
Sir if you don't mind can you provide me your WhatsApp no. Pls. sir actually I want to contact you pls.sir!!! By the way sir my name is Sakaham!!
Osm
Its 2024 and yes we are still seeing this video and learning from it !
is it enough for advanced level
legends of new 11th still likes to watch old gold wali video by physics wallah
Legends still watch physics wallah old lectures😎
We are legends🤘🤘
Yeah! 🌚
Yesss
His lectures is not old
Correct. I like the old approach of Physics Wallah not the new one.
Teachers in classroom- samajh aa gaya
Alakh sir - feel aagaya
😁
😀😀
jeetu bhiaya irl😍😌
Feel toh vo deti thi
@@mudit1110 😂😂
😂😂😂Bhai itna sach nhi bolna tha😮@@mudit1110
Who is here in December 2020😜😜
.
.
Edit ; December😋
.
.
4 million😜😜 Subscribers ❣❣
Congrats Sir ji 💥💥😊😊
.
.
1 TEACHER = 40 LAKH STUDENTS 🤪🤪😲😲
Me
@@srayadav1450 😅😅
Me bro
I am starting now
Maine aaj shuru kiya
Timestamps
Newton's Law of Gravitation - 4:22
Q1 - 16:05
Q2 - 22:45
Q3 - 43:00
Principle of Superposition of Force - 53:08
Example Qn - 56:24
Special Question about Force between an Object and Point Mass - 1:03:10
Answer of this Special question is [-GmM(2a+L)] /[ aL(a+L)]
Half Ring Qn - 1:19:10
Answer of Half Ring Qn is (d)
Can you please solve that half ring question?
Alakh sir's old white board videos are gems even in 2023 and will also be after 50 years ❤️❤️ huge respect
yes bro
You are correct bro
❤️❤️❤️❤️❤️❤️❤️💘💝💖💖💝💝💘💖💘
yes bro , but 2023 abhi start kaha hua h , i think you are talking about certainty
Are u here for neet 2023 ?
Integral dF =Integral dFsintheta
F=Integral Gmdm sintheta /R^2
F=Gm/R^2 Integral dm sintheta
Since it is ring we use mass per unit length to substitute in the place of dm.
M/pi R =dm/R dtheta
dm=dtheta M/pi
F=Gm/R^2 Integral dtheta Msintheta/pi
F= GmM/R^2 pi Integral sintheta dtheta F= (GmM/R^2 pi )[-costheta] (theta = 0 to pi)
F= GmM/R^2 pi (-(-1-1))
F=2GmM/R^2 pi
F =2GmM/R^2 pi (j)
Thanks!
Salute to you
@@abdoonyt9049👍
copy paste 💀
why n how did "sintheta dtheta" become "[-costhetha]" ? :(
These videos are taught in more easier way than offline coachings.
Ye kon kon 2024 -2025 mae dekh Raha hai 👇👇
Ha..😂
Me
Ha bhai bolo kya kam hain
Me...👍🏻
me.....
My life^s luckiest moment is that when I found your channel sir.
Kya muje koi bataye ga yeh jo M1+M2 tha wo tou 12 ban jayega na...muje koi smja sakta hai...
@@aafreenjaan6974 Nhii😂😂😂
@@bhaveshsharma2058 🙄🙄🙄batao naa...
Bhai yeh sab bolte hai
@@mydevilisme8386 can u plzz help me in solving this equation..
This way of teaching will always remain gold.
EDIT : Made it to IIT, thankful to sir for helping me clear concepts and theory
Diamond bro
Yes
Rubby bro
Emerald bro
wow congo
My all-time favourite singer 😂❤️
And also sing his song
44:30 with 0.25x 😂👍
Toh baki singers kya job chod de... 😂🤣
🤣🤣🤣🧡🤍💚
No
😀😂😊
Kon Kon physcis ka tution nahi padata bass physics wallaha sir se padata😍😍😍😍😍😍 hit like
Me
Suru me padhi thi lakin unit test me marks achhe nhi aaye to tution chhod di
Me too
Maine bhi yrr
Me bro
1:05:18 I was like " Aaj to pehli baar me hi sahii answer lg gya"
Sir at 1:05:20 "ruko zraa sabar kro "
Ekdum se waqt badal diya.. Jazbaat badal diye sir 😂😂
Mai toh shock ho gya kuch der ke liye😂😦
M soch hi rhi thi ki mera kaise shi ho sakta h🥺😅
in this Question @ 45:45 the bodies are not point masses. then how did sir take r from COM? shouldn't he have used dm?
@@SeriousStudent603 aree hum center to center kr difference ko r kehtr h jab mass uniformly distributed hota h
Me too😅😅😅
Alak pandey sir = jitu sir from Kota factory....hit like .,....😘😘😘😍
Nhi Urmila das alak Pandey =koi nhi yrrr
Alakh pandey sir sabse aage hai
*Jeetu Bhaiya
factory nahi faculty
🧐
October me dekhne wale like kro😂😂😂
Ham November me dekh rahe hai 😂😂
Sir - gravitation law is not formed by falling of apple 🍎.
Me - Whole life was a lie 🤣🤣🤣
🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣
Right
😂
😂🤣🤣
Yes you are right
Mr Alakh Pandey my daughter is preparing for neet, went through your lectures. It is great yeoman service you are providing to student. God bless you and your team lectures on physics
Sir does his leutures will help in neet preparation I m doing self study for neet n I m totally confused so can I follow him can u pls help me out by replying to my msg 🥺🥺🥺🥺🥺
@@appufan716 surely mr Alakh Pandey teaches physics I have never seen any teacher like him in my life.Definitely you should follow his lectures it will take you long way.
@@vishnubajpai5778 tqsm sir for ur valuable reply ✨☺️stay safe n stay happy sir .....
Human spelling is wrong.
🙏
anybody starting this chapter in 2020
Before exam😂
Yah me😂😂
Yes.... revision chal raha h
Haan
Yea , I m in tension cuz abhi pura ek book baki h.
Abhi kaun kaun dekh rha hai november me 😅
😢😢
Me
Me😂
A UNBELIEVABLE LECTURE.....
NOT BY A HUMAN....
BY
A
GOD...💝💝💝💝♥️💙💙💚💚❤️💖💖🥰🥰💞💞
गुरुर्ब्रह्मा गुरुर्विष्णु र्गुरुर्देवो महेश्वरः
गुरु साक्षात परब्रह्मा तस्मै श्रीगुरवे नमः
___________
Sir, Aap hamare TRUE TEACHER ho...
Love u sir, from Heart 💝
Aamen 💖
@Raj Varsha Amen
Kuch jyada hi nhi hai
@@staarstar8428 really😅
@@staarstar8428 Librandu ki gand jali 😂
Did anyone notice the escape velocity equation on Sir’s T-shirt?!🤩😂
i did
Ya
Ya
I did
Me
24:48 reason why I prefer watching these old lectures 😂. Entertainment bhi ho jaata hai aur padhai bhi 🙂🙂🙂.
Ma bhii
bhai mere purane chapter nhi hue so can I start from here
@@gamerfox1075 I think you are required to know some mechanics to start gravitation but if you know some basic concepts then I think you can
@@gamerfox1075 yesss bro you can start 🤗♥️
@@gamerfox1075 you need to learn force kinematics and work power energy and centre of mass to learn gravity completely
This man will create a milestone in coming year. Love you sir ❤️❤️❤️
he was already create milestone☺☺
@@anuragsharma8134 I know it broo
Dimensional formula is [ M-¹L³T-²]🙏
Yes
Tq
yep
I am a 12th student ... At first Alakh sir told that if your gravitational force is not clear then you can't understand electrostatic ... Then I came here to clear my weakness and now sir told .... "Agar rotational motion nhi padhe ho to Kya ghas chiroge" ....😖😖😖
Lol but all are interconnected 😅😂
Samd😢😢
He Is Like Jeetu Bhaiyya
No he is better than Jitu bhaiyya
There is no comparison of him and jeetu bhaiya but yeah we can say that they both are legends!!
look where this guy has reached now!!!!!!
In 2022 I am seeing this video and I am thankful to alakh sir we all are proud of you sir you are the best teacher........................................
Sir, In my school I am not able to understand what school teacher explained us but when you are here no fear of understanding concept .....
Solution to last question-
For elementary mass dm, (here, theta = @)
dm = Mdx/πR = Md@/π (dx=Rd@)
Now, dF = Gmdm/R^2 = GmMd@/πR^2
But net force will be only the y component (since, x component gets cancelled by the symmetric half)
So, F net = dFsin@
Put df=GmMd@/πR^2
Fnet = GmMsin@d@/πR^2
Now, integrate from 0 to π , answer will be option (D)
thanks buro
@@aniketnarwal7067 I don’t think It’s linked pr basics pta hone chahiye last all chaps ke
@@aniketnarwal7067 try watching first few mins… you’ll get to know if you’ll
Be able to do it or not
thanks buro
Dilbar dilbar !!😂 anyone
frustrated from institute teacher and then relieved and confident by learning from sir in 2019
Me
Me
😂😂😂😂😂😂😂😂😂😂😂
Sir, your hard work is useful to us even today and will be useful even 50 years from now...lots of respect.❤❤
My Parents usually do suspicious reaction when ever I study through PWsir because of his Inter video Songs 😀😀😀😀😀🤓🤓🤓🤓😍
Haha same here
Same here
Ha bro mera bhi same he😁
English😼
@DNA yes bro mne bhi rat ko ek din video dekh raha tha papa a k puchhne lge ye phurr kuchuk zurrr ye kya kar rae hain sir
Mne bola feel le rahe h question ki us din k nad se headdphones k sath hi dekhta hu😂😂😂😂😂
45:24 The happiness when ur answer get correct ❤️
@Prince mujhe bhi same prblm hai bro Idk what I have to do
@Prince guys look i am in 12th right now and i felt the same problem in my 11th,
Try changing your source of question solving and always solve basic ques first and don't loose the confidence it took me 2 years to gain it back or notes revise karne k baad hi ques solve karna it helps
@Prince bro this is happening with everyone right now so don't panic
noob
143😌😌🙈🙈
One of the most helpful set of lectures.... Really, old is gold...
Integration of Dfsin(Ø)...... Take Df =Gmdm/R².... Then there is problem of dm..... So mass per unit volume for dm = dm/RdØ ,, & for half ring =M/( pi)R...... Mass per unit volume will be same as body is symmetric so dm/Rdø =M/ (pi)R from this dm=MRdø/(pi) R.... dm =Mdø/pi.....
Now integrate & take value of ø from 0 to 180
Ans will come out to be 2GmM)/(pi)R²
यह jee mains ka एक scoreing topick
है
गुरुत्वाकर्षण की series शुरू करने के लिए बहुत बहुत धन्यवाद गुरू जी! 🙏🙏
जन्मदिन की अनन्त शुभकामनाएँ गुरु जी!
आप जिये हज़ारो साल !
🙏🙏🙏
Itni pure hindi
Bahut padte ho
Correct
Apanko aadhi Hindi aati nahi aur tu double Hindi me blo rela hai
RIP English... ☠️⚰️
Is my hand and like button are point masses...?my hand attracts toward like button after watching alakh sir's video..😊😊🥰
@Talent Enhancement Academy
.
Alakh sir ki gravity hi itni kamaal ki ki koi bhi unke video ki taraf khicha chla aa jata hai😄😄
Before watching the video...
Beautiful and lovely comment
th-cam.com/video/tzx4e0cp65M/w-d-xo.html
Unacademy ' s Father 😁
Jo mil sake asani se ...,,use pane ki kwaish hai hi kise .. 📒📚 jid to use pane ki hai .. Jo mukkadar me likha hi na ho 🎖️🎖️
Very nice 👌👌👌
Sahi Kaha Yaar ......... 💓 touching
bilkul
100% corrrect
@zaid khan Sahi kaha
1:20:13
Ans -->d
dF = GmMd@/(pi)R^2 sin@
integrate it from 0 ---> (pi)
F = 2GmM/(pi)R^2
How?
How many of you are noticed that.... Formula of escape velocity is written on t - shirt of our sir😊😊😜😜✌️✌️✌️👌👌👍
Mene Kiya notice
Me too
Sir khud bole ye cheej on next lectures
@@akhileshkumarmishra3617 hmm
That's what I was wondering
Any one preparing for neet 2024 ..
I am very thankful to sir that I got to understand the physics very easy from his explanation.
I also,,🤗🤗
I also
Also
Same here.. 😁
I also
The technic behind teaching is very appreciable thanks for great knowledge sir .
last ques ans is (2/pi)GMm/Rsquare i.e. Option (D)....Thank u so much sir 🙏💗💗💖
@@InspoShreyo mass of element dm of ring is M/piR(circumference of half circle) *lenth of small element
now length of small element = radius*small angle d(theta)
now force on m due to small element dm on ring = mMd(theta)/πR^2
now this is force F on m due to small element dm
net force is Fsin(theta)
if you integrate it to from 0 to π..you will get the answer.
@@darkhorse640 M m. d(theta)/ πr²
Don't understand
Again tell me
@@rajeshkumarjena2309 thats actually gravitational force acting on m due to dM of ring which is, F=Gm1m2/r^2 and here this F is =GmdM/R^2 where we found dM to be equals to Mdθ/π (dM=M/πR × Rdθ (as dL=Rdθ) so now F=GmMdθ/πR^2
I got the same.... hoping that to be the right one...!
I have got the same answer
But for integration I don't understand what will be limits
Can you please tell me, if you have solved it?
Option 'D' (2/π GmM/R² j^) is correct 🥰
How
Still giving attendance to old lectures
U are my physics rescuer
Thanku sir 🙏
Yes
2024
Alakh Sir knows the correct procedure of teaching. 🙏✨
The lectures, the contents uploaded here are just incomparable❤️! Currently, huge no. of students are studying from here I'm sure...and the coming generation too, will be seen here with a new zeal in each coming new year!💫💫🔥🔥 Humble honour to you Sir!❤️❤️
Heyy is this lectures are enough for neet 2023???
@@sincerelysimi Yes obiyosly... But i thought you should follow one day one chapter series by alakh sir.....
@@alokgurjar8953 where it is available please send me the link 🥺🙂meine woh dekha tha 1 shots but woh revision ke liye... Actually I haven't started those chapters that's why
Bro do u have the pdfs of these old lecturs i really need that
You are a great energetic teacher I have seen ever.
Your voice ' Hi bachho....' is very loving.
After all you are a good physics teacher.
hello * bcho
not hi bcho 🤣🤣
@@nikhil25013 pagal hai vo 🤣🤣🤣
Sahi se suna nahi hai isne lagata hai 🤣
Hi bacho nahi hello bacho hai
This man plays something unique role in my life, idk why...❤️
Sir aapke lectures itne engaging hote hai ki hum like karna bhul jaate hai😆❤
Facts
😂😂❤❤
After watching S- block elements and Hydrogen in pace series(no other option🙂) and then coming back to alakh sir for gravitation is just different type of excitement .
Hn yr
Anyone else who is starting this chapter in 2019 ?
Bhai mai 🤣or ghanta kuch smjh ni aara kyuki circular motion pdha hi ni kabhi
I am also
@@Living_it_late 👍
Pranjay Jain you are an iit student right
@@Living_it_late not now 😅 but I will be
Sir is great.
He will be remembered years by years.
His teachings are immortal
Now it's 2023 but I still searching for old lectures of Alakh Pandey Sir❤❤❤
Hy plz reply is this lectures sufficient for jee mains and advance??
@@tabassumshaikh7377Not sufficient for JEE ADVANCED
@@tabassumshaikh7377yes..... watch the full playlist...then I hope koi bhi question nhi atkega
Kon kon yee vdo 2022-23 mai dekh raha hai....? 😕......believe me you r legend
Thank u for 1k likes❤️
Legend **
Bro I
Bhai mai dekh raha hu kal test hai and ata ghata bhi nahi 🤣🤣🤣🤣🤣
Now me
Meeee Huuu
My school teacher fiinished this chapter in just two days 😂😂😂😂🤣🤣
Alakh sir na hote toh it was impossible for me to understand this chapter😘😘😘love u physics n chemistry ke superman 🤗🤗
Stay blessed!!!!!!!!!
Meri mam bhi sirf 3 din Mai khatam
Muja laga es lesson Mai kuch nhi hai😆😆😆😆
@@ejaz8295 hamari madam ne kabhi feel hi nahi hone diya ki physics hard hai....kyuki usne kbhi zindagi me numericals krvaye hi nahi.....usne to SHM, Elasticity chapters syllabus me se delete krva diye ha taki hame problem na aaye....usne sirf article hi krvaye ha hame.....aur vo khud ko best teacher kehti ha😊😊........
@@abhijitsingh734 😂😂😂😂
Khushi Gupta well my physics sir is better lmao
He even gives us many assignments and notes also
Same here ...my teacher also completed it in 3dayss
The Only man on this planet who can make us visualize things without any animation.
I love Alakh sir's physics and chemistry classes🧡❤💛
thank you Alakh sir!🙏🙏🙏
Brilliant 👌
He truly understand which maths will blow our mind.
1:05:18 Ek dum inhone waqt badal diya, jazbaat badal diye, zindagi badal di....
Ok no problem🤣
this one got me lmfao XD
Mera bhi kata tha bhai
🤣🤣😂😂 ha bhai
Sir Your style of teaching is marvellous.I wish you should have been my teacher.👍🏼👍🏼
He is OUR teacher.This one is better.
Tq sir giving a wonderful lecture❤❤
Love from telangana😊
Found this channel randomly and now i am in love with it 😊😀😀
Plz subscribe this channel 👉👉👍th-cam.com/channels/xOhQUO8fvZp6YEgif6TEzg.html👈👈👌
Found u randomly and now......
Achha h
U mean Randomly?
@@aryanSingh-ff7ln ya
One #like for this great teacher👌
East or west physics wallah is the best
@@nooneelse9884
Aap bhi padhaaiiii karooo comment mat karo
Bhai yaaar physicswallah ke video men ye comment pad pad kr thak gayan hoon koi aur dialogue nahi bacha hai kya
@@nooneelse9884 hum kuch bhi kare tumese kya mtlb
@@nitrobash correct
Larne se koi fayada nahi h
At 24:42 I felt so relieved when sir said 'Ham padhatd hai apko'
Bro do u have the pdfs of these old lecturs i really need that
You are real life hero sir
Or ha good singer
Yes really good singer also
Nice
Powerful People ✊ make places Powerful 💪...is Right for Alakh Pandey Sir 🔥🙏😇
best thing about your videos is that they are fully conceptual and that's what physics demands.💎
Old is gold this is not enough for alakh sir he deserves more successs in life and i hope he get it in 2023 or coming years he gets more n more❤❤❤ lots of good wishes sirr....ur like a god for students difficult hours🙏❤
best teacher i have ever found in my last some years.......... love you sir from the core of my heart
Option D is correct.
Where dm=M/πR×dl and dl=Rd(theta)
hints to solve the last question:
1) form overall expression for force acting on m.
2) try integrating it
3) your d(_ _ _ _) won't be suitable
4) try finding the value of dF
5) still not enough, try finding value of dm
6) again, still not enough, try finding value of dx or dL or another expression in d( - - )
7) now its enough :) you can easily take out all the constant values and integrate the expression under the integration symbol (make sure to use proper limits by considering symmetry and use the hints which sir said)
Answer kya aa rha h??
Itna vela tum?
,
Mai san????????
Can u please tell answer
1:19:00
Answer is option d)+2GmM/PiR2
Sir ki pasina kis kisko dikhai de Raha hai?....
37:36 pe Dekho .... Sir is absolutely great !!!!
Stay blessed sir ...
Sir...
You save my tution fee and time!!!
Thanks again for your help:)
Mine as well
Download videos from youtube for FREE
th-cam.com/video/7h9ZR2cnM7Q/w-d-xo.html
Bhai sir ko paytm pe bhejdo thode se
Motivation milti h
When you get money for your help
Answer for last question is option d)2GMm/πR²
Yes fuccker
Can u explain me???? Plzzzzzx thodi confusion h mjhe uss quesn m
@Chandrapal Singh Nhi Bhai.... problem hoga Samajhne me khi khi pr
@@islamophilia28 its easy just integrate sintheeta component till pi by 2 and multiply by 2. basic integration.
Last question answer of D 🥰❤🔥❤🔥❤🔥
Sir thank you for this wonderful lecture🥰🥰🥰❤️❤️❤️
Sir... आपकी तारीफ कैसे करूँ
मेरे पास शब्द नहीं हैं
Bas... Majaa aa gya
Apke jaisa koi nhi samjhata h sir...
Love you...
Sir, your teaching is very interesting and inspiration for me. God bless u.
"Dil toh bacha ae ji".
Kehoooooo😂😂😂😂.
Love you sir.. 🥰🥰
Army
Mata pita ne halato ka samna karna sikhaya.Or guru ne mujhe halato se ladkar ek nya rasta dikhaya....❤❤❤ Thanks a lot sir......
#Answer of last question
Option (d) 2GMm/pi R^2 is correct.
If som1 get confused plz take the length of mass dm and M which is RdQ (arc) and pi R
And equating the ratio
M/pi R = dm/RdQ
From this put value of dm in integration of Gmdm sinQ/R^2 by taking the limits from angle 0 to 180 .
Hope u will get the ans and it will help you 😊😊
Thank you very much sir 😊😊
@Addictive GamerZ I am very happy that it worked for sm1 but I think that this thanks will go to our respective sir bcz I studied from sir
Bro how it's dmSinΦ😟
Bro han tumne ek or cmnt bhi kiya tha pr mai dhundh nhi pa rha vo puchh skte ho
Mai is id ko use nhi krra tha bde dino se isiliye reply me time lg gya 😅
bro plzz can u tell y there is Rd theta
@@RiteshkrRawat-dv6dt bro when u take a small element dm then it will make an arc on the semicircular ring with the center
Also length of the arc say radius is R and the small angle is dQ so from the formula of arc length which is
Lenght= Q x radius
So Q is dQ and radius is R so it will be RdQ
U can check the formula on google also
Hope it helps 😊
38:12 what a composition 🙏
I am from samyak Allen kota
Pre Medico
Bt aap jese concept nhi dekhe jo sidha mind me set ho jaye
U r teching very nice sirji
Talwandi ke paas kya ,
Thanks sir ji for this awesome video. My answer to homework question is option d.
@Aman Kirola bhai allen mai jane wale students agar youtube se padhe tou its not paisa waste bcoz allen mai ek time pr bohot sara stuff manage karna padta hai or isliye kabhi kabhi concepts reh jate hain ,ek baar allen jakr dekh tab ye stupid comment karna
Ans ka javab da
Me too from Allen Kota samyak but I like your concept
Hlo sir m uptgt ki tiyari krrhi hu or tution bhe pdhane lgi hu aap k lecture dekh kr hm bhut motivate hue or khud kuch project bnay h or bccho ko pdhate h bccho ko physics m mja aane lga h ye sb aapki vjh s h aapka bhut bhut dhanyevad aaj hmko bhut tej fever h mummy subhe s pdhne nhe de rhi the hm revision krrhe h 🙏
Are Wah Sir ...Aapne hamari sun li ❤❤❤😍😍😍
Acha
other teAchers: most important most difficult sawwal
alak sir: pyaara sawaal jaldi aa jayega try karo!
😊🤗🙏🏿😌
Best part of video Alakh Sir Singing Tum pass aaye in "PHYSICS" version 38:13
Rig Veda-1-103-2 explains: “The gravitational effect of Solar System keeps the earth stable.”
Really??
@muskannthakur yes the solar system gravitational effect keeps the earth stable on axis and earth revolves around the sun and rotate on its axis ,, this shloka is in rigveda and Surya siddhant book 👍🙏🙏🙏🙏🙏
Sir's explanation of chapter is SIMPLY AWESOME 🔥🔥🔥🔥🔥🔥🔥🔥🔥🔥🔥🔥❤️❤️❤️🔥
answer of last question is (d) --- 2GmM/pi R^2 ^j
Plz what's app me in 7557032456 in this number...
Adil Ansari bro I am getting pi r^3
It's right
Right bro
Shi hai
ANSWER TO HOMEWORK QUESTION IS:
2GMm / pie (r^2)
Hint: Find df from mass m at d theta , the cos components will get cancelled only the sin would remain, and then can be solved by integration of df sin theta from 0 to 180.
{m/pie r = dm / rd theta } from conversion of dm to d theta
Nahi samaj aaya
Skill issue
Pehli Baar moojhe Kuch samaj Aya hai physics mein or vo aapki vja se sir thank you so much❤❤
1st question can also be solved by momentum conservation.....we get the same result....u are Great sirji.......
I wanted to tell the 2years ago wale alakh sir now you are have achieved every thing 🤩
ikr !!!