11 chap 8 | Gravitation 09 | Escape Velocity -Derivation , Concept , Numerical IIT JEE MAINS /NEET

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  • เผยแพร่เมื่อ 25 ธ.ค. 2024

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  • @PhysicsWallah
    @PhysicsWallah  6 ปีที่แล้ว +451

    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/
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    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 01 | Introduction : Law Of Gravitation JEE MAINS / NEET
    th-cam.com/video/4K7cRxXuQ_k/w-d-xo.html
    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

    • @diyanaarif8850
      @diyanaarif8850 6 ปีที่แล้ว +3

      At 35:09 why initial potential energy of 2 planets becoz if each other is not taken in account

    • @pranjalpagaria322
      @pranjalpagaria322 6 ปีที่แล้ว +1

      Is this enough for jee advance

    • @subh_paul10
      @subh_paul10 5 ปีที่แล้ว +4

      Sir how can the Kinetic Energy in infinity be zero????

    • @karan_2120
      @karan_2120 5 ปีที่แล้ว

      @@subh_paul10 it is assumed to be 0 , like potential difference at infinity is taken at 0 [ class 10 - electricity chap ]

    • @maqboolahmad6330
      @maqboolahmad6330 5 ปีที่แล้ว +3

      Physics Wallah - Alakh Pandey sir love u from pakistan

  • @Rocky-iz2se
    @Rocky-iz2se 3 ปีที่แล้ว +269

    He can do chemistry
    He can do mathematics (basics)
    He is legend in physics
    Real teacher has ability to make his students understand everything 🙏

    • @Alphamatics1234
      @Alphamatics1234 8 หลายเดือนก่อน +3

      Edupoint 💀💀🗿

  • @drravikanthgo
    @drravikanthgo 3 ปีที่แล้ว +1147

    What is ellipse ?
    Other teachers : it is a shape in which the planets revolve around the sun for example , and you can make it by an activity of 2 pins and a tauted string
    Alakh sir : yeh ek shape Hota hein , aalu jaisa
    🤣 😂 😂

  • @carguy7480
    @carguy7480 4 ปีที่แล้ว +419

    Timestamps:
    2:00 Escape velocity
    21:20 derivation using conservation of mechanical energy
    26:00 Vesc for object on surface of Earth
    36:00 JEE q
    45:00 JEE q. g' = g/4, H=
    55:00 JEE q

  • @strangermanushy9913
    @strangermanushy9913 4 ปีที่แล้ว +1206

    Itni positive energy do ki negative energy khatam hojaye ..that hit's me!

    • @elixpo
      @elixpo 3 ปีที่แล้ว +12

      @@PhysicsWithNisarSherpao did u even understand what he told?

    • @nasimaktar4998
      @nasimaktar4998 2 ปีที่แล้ว +5

      @@PhysicsWithNisarSherpao 🤣🤣are you even understood that what he was saying?

    • @rudrakshtank4792
      @rudrakshtank4792 2 ปีที่แล้ว +3

      35:15

    • @rynpoonia5017
      @rynpoonia5017 2 ปีที่แล้ว +1

      Negative attracts positive 🤣🤣

    • @creditto..9669
      @creditto..9669 2 ปีที่แล้ว +3

      Tabbhi tumhara iit na hua

  • @droidly_
    @droidly_ 11 หลายเดือนก่อน +9

    1:07:14
    Other teachers - Vrms>Ve of moon so no atmosphere
    Alakh sir - full explain ❤❤ LEGEND FOR A REASON

  • @vipulgupta861
    @vipulgupta861 6 ปีที่แล้ว +494

    sir daily u r gaining 2k subscribers ... india 1st study u tube channel which are growing with such a fast rate . just bcs of ur dedication. love u sir

    • @mathsciencemasti9174
      @mathsciencemasti9174 6 ปีที่แล้ว +7

      Very good comment
      Thanks

    • @saaadii
      @saaadii 5 ปีที่แล้ว +3

      @@mathsciencemasti9174 bilkul aj b ye chanal phle se zaida grow kr rh h

    • @SanjivKumar-gx6zd
      @SanjivKumar-gx6zd 4 ปีที่แล้ว

      Because of pakistan

    • @adarshfoujdar9246
      @adarshfoujdar9246 4 ปีที่แล้ว

      @Himanshu Bhadane teriiiiiii

    • @1v4madstroyt3
      @1v4madstroyt3 4 ปีที่แล้ว +1

      YES HE IS A PASSIONATE TEACHER

  • @aparnabts5997
    @aparnabts5997 3 ปีที่แล้ว +334

    This board have changed many lives.💖💖💖

  • @dynamogamingoffscreen7523
    @dynamogamingoffscreen7523 6 ปีที่แล้ว +568

    Sir u r the besst. Rulla diya aapne itna content deke .....

  • @SahilThorat04
    @SahilThorat04 ปีที่แล้ว +92

    Hi
    Sir, after 4 years of uploading this video,
    After 4 years It's very helpful..
    I will come here every year to see my comments and my teacher.....
    10:48 PM 8-January -2023
    ......SAHIL THORAT

  • @laxmisambari1360
    @laxmisambari1360 3 ปีที่แล้ว +213

    He is the only teacher still now didn't say "pls subscribe r like" he only says us to learn 👍👍

    • @itsasecret2132
      @itsasecret2132 3 ปีที่แล้ว +11

      Cuz he knows we will......and we will ofcourse support him.,.

    • @sumanag7343
      @sumanag7343 2 ปีที่แล้ว

      @@itsasecret2132 even though he doesn't say 💓🔥

    • @CG_GAMMER
      @CG_GAMMER 10 วันที่ผ่านมา

      Hi

  • @ydtush05
    @ydtush05 3 ปีที่แล้ว +167

    Newton's 3rd Law - Every Action Have equal and opposite reaction....
    Alakh's 3rd Law - Your next action depends on your previous action

    • @qwertyphysics
      @qwertyphysics 2 ปีที่แล้ว +7

      This law of escape velocity is being taught to me in class 9 by my school
      Shame on this foolish ncert and Indian education system
      I am proud of my school

    • @abhay.rijwani
      @abhay.rijwani 2 ปีที่แล้ว +2

      💯💯💯💯

    • @ushasoni7551
      @ushasoni7551 2 ปีที่แล้ว +8

      @@qwertyphysics NEET JEE nikaloge to _shamed_ NCERT hi kaam ayegi. 🙂

  • @sharvanrajput1513
    @sharvanrajput1513 6 ปีที่แล้ว +197

    sir your explanation about the material is too good

  • @fab6324
    @fab6324 3 ปีที่แล้ว +6

    In Q at 32:00 one can simply make R=2R in formula and calculate escape velocity

  • @chhayakhan5700
    @chhayakhan5700 6 ปีที่แล้ว +38

    your really one of the great beings
    may god bless you

  • @khoonigirl3929
    @khoonigirl3929 4 ปีที่แล้ว +21

    1.) Elliptical path
    2.) Circular path
    3.) elliptical path
    4.) Parabolic path
    5.) Hyperbolic path

    • @Vsk02
      @Vsk02 3 ปีที่แล้ว +4

      Kiska khoon kardia tuna

    • @nityapatel5372
      @nityapatel5372 3 ปีที่แล้ว

      @@Vsk02 😂😂😂😂

    • @Vsk02
      @Vsk02 3 ปีที่แล้ว

      @@nityapatel5372 🤣🤣 Puch isko reply nhi kar rhi

    • @gk5012
      @gk5012 2 ปีที่แล้ว

      By mistake dyan gya khooni 🤭

    • @s.kstudy3070
      @s.kstudy3070 2 ปีที่แล้ว

      haaaaaaaaaaaaaaaa

  • @still_hustling13
    @still_hustling13 2 ปีที่แล้ว +23

    These lectures are crystal clear than coaching lectures 💯🔥

  • @harsha3339
    @harsha3339 4 ปีที่แล้ว +25

    *If you don't understand the last solution,it might help you*:
    Mass=rho×volume,
    Surface area of a sphere=4πr^2,so volume can be written as,r/3×area,
    So,Mass of q=4rhorArea/3
    Mass of p=rho ×r ×area/3
    Mass of Mr=5×rho×r×area/3
    Vescape=√2GM/R
    Vp=√2Grho×area/3
    Vq=√8Grho×area/3
    Vr=√10Grho×area/3
    "FROM THIS INFO. YOU CAN FIND THE ANSWERS."

    • @saradasarawagi6622
      @saradasarawagi6622 6 หลายเดือนก่อน

      Bhai aapka hua kya​@@Austrianpainterfan69

  • @raees2148
    @raees2148 3 ปีที่แล้ว +21

    एक बात दिल से बोलूंगा मास्टर ।
    आप जैसा ना कोई हुआ है, ना होगा।
    आप अद्वितीय हो।
    🤲🤲🤲😃🙏❤🙏।
    आज मुझे शर्म के साथ कहना पड़ रहा है की जितनी मेहनत से आप पढ़ाते हो, उत्नी मेहनत से तो हमारे सरकारी टीचर भी नही पढाता है।
    वो सिर्फ गोवर्ंमेंट एम्प्लोयी बन कर रह गये।
    असली मास्टर आप ही हो
    🤲💕💕😃
    सलाम आपको

    • @edel257
      @edel257 3 ปีที่แล้ว +1

      Acha

    • @AmodKumar-ul5zk
      @AmodKumar-ul5zk 3 หลายเดือนก่อน

      भाई आप बिहार या उत्तरप्रदेश से हो ना😂

  • @AmbushGaming-en3sh
    @AmbushGaming-en3sh 11 หลายเดือนก่อน +5

    15:23
    6th path --> when V = Infinity
    Straight Line

  • @factzfactory4956
    @factzfactory4956 3 ปีที่แล้ว +64

    Sir I solved the iit 2015 mcq by my self and I got value of N as 2 by me ..... i dint opened pause and when I saw that my answer is correct then I am feeling immense pleasure

  • @bijaybk7417
    @bijaybk7417 5 ปีที่แล้ว +50

    i am from nepal and i love your teching technique . from you i get more thing to know than i tought in school which is so helpful .thank u sir

    • @solespirit9211
      @solespirit9211 3 ปีที่แล้ว +7

      nepal me school hote hai kya?!

    • @Gaurav-um4oh
      @Gaurav-um4oh 3 ปีที่แล้ว +2

      @@solespirit9211 haina muji tero desh ma matra hunxa school

    • @solespirit9211
      @solespirit9211 3 ปีที่แล้ว

      @@Gaurav-um4oh you cant even speak english this proves that you don't have schools!

    • @nithincristano8572
      @nithincristano8572 3 ปีที่แล้ว +1

      @@solespirit9211 dosent mean you speak english you are successful do u know that no one speakes english in Europe other than UK dum ass give respect and take respect you ilitrate btw I am an indian

    • @s.kstudy3070
      @s.kstudy3070 2 ปีที่แล้ว

      haaaaaaaaaaa

  • @akb621
    @akb621 6 ปีที่แล้ว +17

    Sir app ka content best hai...
    Sir . Aap ko standing ovation ......😊😊

  • @adityagupta2947
    @adityagupta2947 4 ปีที่แล้ว +45

    The most amazing concept of application of conic sections to gravitation I heard 1st time hats off to you sirrr.....

  • @volatuscorvus621
    @volatuscorvus621 5 ปีที่แล้ว +39

    His t shirt actually show how indulged he is in the topic

  • @chetana_pd
    @chetana_pd 5 ปีที่แล้ว +25

    Sir's favorite song " Zindagi kaisi hai paheli haayee..kabhi hassaye kabhi ye rulaye.."😊😍😍
    Sir you sing very well 👌🥰🥰
    And thank you so much for sharing your knowledge 🙏🙏 we are so grateful to have you ☺️☺️

  • @chanduchandup-je8mi
    @chanduchandup-je8mi 4 ปีที่แล้ว +9

    Sir there is some magic in your teaching how u will make us understand the topic this much clearly

  • @Copied_FO
    @Copied_FO 2 ปีที่แล้ว +6

    33:00 min
    In that math if we assume a surface at (h=R) height from earth surface then the total distance between two R'=R+R=2R and we can apply Ve=√2GM/R'
    =√2GM/2R
    =√GM/R
    =7.9 km/s
    Is that process right?

  • @Gorilla59959
    @Gorilla59959 2 ปีที่แล้ว +37

    Thanks a lot, sir, you are like god to me. NTA announced dates yesterday have mains in 1 month, fully depended on you sir for my preparation, and solving questions with you I don't feel the questions are difficult at all, the way of our teaching suits me a lot. Thanks a lot, sir, I don't know how to repay you for your great work. 🙏🙏🙏🙏Will always be indebted to you🙇🙇🙇🙇🙇🙇

  • @Hemant_Mishra
    @Hemant_Mishra 2 ปีที่แล้ว +17

    Thank you so much for ur Amazing lectures sir!!🌺🌺

  • @meharbanparmar2893
    @meharbanparmar2893 7 หลายเดือนก่อน +125

    Anyone in 2024😂😊

  • @kunalkohli1107
    @kunalkohli1107 4 ปีที่แล้ว +10

    Sir I am a teacher and I have learned a lot from your lectures. Thanks for uploading them.

  • @learnwithfun1775
    @learnwithfun1775 6 ปีที่แล้ว +6

    Sir I had not seemed a teacher like you because you also have a character and voice to attract the students.Sir I like your character very much

  • @vineetansal2433
    @vineetansal2433 5 ปีที่แล้ว +52

    9:26 the same concept behind the Mars mission , I recently watched mission mangal

  • @adityachaubey8662
    @adityachaubey8662 3 ปีที่แล้ว +97

    When you are watching the class with parents and Alakh sir starts singing 😂😂

  • @alokchaturvedi7700
    @alokchaturvedi7700 5 ปีที่แล้ว +12

    Sir ur way of teaching is very good
    I love the way u teach, u make the topics really easy to understand
    U have avery frank nature as well.... 😊😊😊👌👌

  • @Curious_swara
    @Curious_swara 11 หลายเดือนก่อน +3

    35:44 sir yaha pe mene alag tarike se sokve Kiya fir bhi right aya...I'm so happy 🎉🎉🎉

  • @shinchan7570
    @shinchan7570 3 ปีที่แล้ว +10

    24:19 sir aapki height achi h...choti ni hai aur agar choti hoti v toh that would not have mattered kyuki aapki soch aur pahuch bahut unchi hai...❤️💖

  • @himani2269
    @himani2269 6 ปีที่แล้ว +32

    Awesome video sir....I enjoyed a lot....especially the last three JEE advanced questions where SUPERB...THANK YOU SO MUCH SIR.....May god bless you sir...My best wishes for you :) :) :)

  • @girijamhegde4699
    @girijamhegde4699 4 ปีที่แล้ว +8

    I wouldn't have the confidence to solve advanced questions...thinking I am not capable..but sir...thanks to u...I am slowly building confidence now...thank u so much sir.

  • @shivani2698
    @shivani2698 6 ปีที่แล้ว +16

    Thank you so much sir for these hard work , efforts , dedication 🙏 🙏🙏 🙏🙏 🙏🌞 love you sir 🌞🌞 🌞🌞 🌞🌞 🌞🌞 🌞🌞 🌞🌞 🌞🌞 🌞

  • @sanjaysalunkhe2663
    @sanjaysalunkhe2663 5 ปีที่แล้ว +18

    U r the best teacher of the universe.......🅰🅿

  • @anjaliparhi2327
    @anjaliparhi2327 4 ปีที่แล้ว +22

    Thank u sir
    So much for using TH-cam as a platform to teach us for free
    Loved your session and may more students join pw

  • @nikhildave5060
    @nikhildave5060 3 ปีที่แล้ว +33

    me :- finally i got through JEE advance question and know the formula
    suddenly.....
    alakh sir:- 50:56

  • @mrattitude4342
    @mrattitude4342 6 ปีที่แล้ว +40

    Sir you are my favourite

    • @everything8150
      @everything8150 6 ปีที่แล้ว +5

      Same here

    • @mrattitude4342
      @mrattitude4342 6 ปีที่แล้ว +4

      @@everything8150 👍👍👍

    • @sanyabhasin3694
      @sanyabhasin3694 6 ปีที่แล้ว +10

      same....hamare sch n coaching ke phy teacher bahut boring h n they make phy uninteresting...😑😑😶😶😒😒

    • @himanshusinghrajput3806
      @himanshusinghrajput3806 6 ปีที่แล้ว +2

      Really

  • @dopamine6428
    @dopamine6428 5 ปีที่แล้ว +4

    I'm from Northeast India,,sir I have seen a lot of your video,and now I can say that you are the best physics teacher I have ever seen....Really amazing.

    • @SanjivKumar-gx6zd
      @SanjivKumar-gx6zd 4 ปีที่แล้ว

      Do u like India?

    • @nawanshika
      @nawanshika 3 ปีที่แล้ว

      @@SanjivKumar-gx6zd northeast is a part of India 💐

  • @saumyajha2142
    @saumyajha2142 6 ปีที่แล้ว +7

    thnku sir
    u hv removed my fear pschology from physics.
    i promise one of the best ranks in neet-2019 's gonna come from my side.
    thnku again

  • @VijayaTanuku-nb3uj
    @VijayaTanuku-nb3uj 2 หลายเดือนก่อน +2

    You're the best teacher I've ever had sir
    Hats off to your dedication and explanation 👏

  • @shikhashikha1682
    @shikhashikha1682 4 ปีที่แล้ว +13

    I have no words to thank you.

  • @debasishsarkar646
    @debasishsarkar646 3 ปีที่แล้ว +20

    Sir alakh pandey is not only a good teacher. In my eyes he is a social worker.who doesn't improve socity by any political parties but his knowledge. ❤❤

  • @pratikpimpalkar4049
    @pratikpimpalkar4049 6 ปีที่แล้ว +158

    Sir please live aa jao, bahut se queries hai. #Hit #Like if you want sir come to live

  • @sudhirakotkar825
    @sudhirakotkar825 2 ปีที่แล้ว +1

    1:06:00 it’s also becoz there no magnetic field (no protection from solar winds ) on moon , so whenever solar storm comes it takes the gas particles present of moon’s surface with it

    • @zambaplays5060
      @zambaplays5060 2 ปีที่แล้ว

      Vy toh gravitational attraction Kam hoke magnetic field hone se bhe gas rahe lega Kya moon pe? Not calling you out, just asking.

  • @sakshisingh5595
    @sakshisingh5595 4 ปีที่แล้ว +7

    Big ups to you sir . Tons of thanks to the teachers like you..

  • @harshrecords4758
    @harshrecords4758 ปีที่แล้ว +2

    43:20 I think for the calculation of potential energy by the sun the distance should be r+2R as the object is at the other end (diameter of earth)

    • @chandranisahanone
      @chandranisahanone 3 หลายเดือนก่อน

      r already includes the radius of earth and the other radius of earth makes it (r+Radius of earth)

  • @prititiwari6952
    @prititiwari6952 2 ปีที่แล้ว +7

    Sir samjh aa gta ! You are best teacher in world

  • @skb__
    @skb__ 3 ปีที่แล้ว +2

    22:35-Sir draw body of mass m that seems like overlapping of s-orbital and p(z) orbital of chemistry

  • @archanasingh6955
    @archanasingh6955 3 ปีที่แล้ว +87

    Sir, please include neet question also in your lecture. That will be a great help for medical students 😊

    • @anushkagupta3359
      @anushkagupta3359 3 ปีที่แล้ว +3

      Right

    • @llawliet7362
      @llawliet7362 3 ปีที่แล้ว +20

      neet questions are not as tough as jee because we have more questions and less time ...so if you are able to solve jee questions in the lecture then no need to worry

    • @arsh0189
      @arsh0189 3 ปีที่แล้ว +2

      @@lavanyasaxena4326 i am but not offended and its correct

    • @shresthgupta2685
      @shresthgupta2685 2 ปีที่แล้ว +5

      @piyush joshi gaming hn beta aao abhi 12th me.. Pata chal jayega kitna easy h..

    • @free-radical6341
      @free-radical6341 2 ปีที่แล้ว

      @@shresthgupta2685 shi bola...😂😂inko pata nhi neet tough hai(thoda to hai yrr)....12th mei aate hi gaand phat jayegi inki

  • @KeshavSharma-tv3it
    @KeshavSharma-tv3it 3 ปีที่แล้ว +2

    sir jo 59:00 pe question krare usme to ham logic se bhi kr skte , jiska mass jyda uski escape velocity highest, options me Vr already highest di thi, then all have same density and Q has more area so it has more mass than P , so by that 2nd option , and if Q is greater than Vp/Vq will be 1/2....

  • @vaskermangrati3253
    @vaskermangrati3253 5 ปีที่แล้ว +5

    you are the best, sir.
    Your videos make my concepts strong.
    thank you sir for everything

  • @manojsurjanwas5181
    @manojsurjanwas5181 4 ปีที่แล้ว +3

    2:00 Escape velocity
    21:20 derivation using conservation of mechanical energy
    26:00 Vesc for object on surface of Earth
    36:00 JEE q
    45:00 JEE q. g' = g/4, H=
    55:00 JEE q

  • @anshikakumari8814
    @anshikakumari8814 6 ปีที่แล้ว +8

    Sir aap mere Ideal and favourite hai.....
    Superb explaination sir....
    Osm
    Mind blowing

  • @Rohit-TROPS
    @Rohit-TROPS ปีที่แล้ว +1

    56:07
    Goosebump Feeling🤯

  • @swastikgarg9711
    @swastikgarg9711 4 ปีที่แล้ว +18

    Me after studying gravitation from coaching
    ME: Yeh kya hai mera bhai??
    Me after studying from alakh sir
    ME: seems quite easy

    • @edel257
      @edel257 3 ปีที่แล้ว +2

      Aise jokes mat mara karo main haste haste ro deta hu

    • @swastikgarg9711
      @swastikgarg9711 3 ปีที่แล้ว

      @@edel257 Bhai Ro liyo Has mat

  • @Curious_swara
    @Curious_swara 11 หลายเดือนก่อน +1

    0:45 😂😂 oh ho matching t-shirt!!!
    You understand students heart, love you sir ❤❤

  • @prayasbatch6915
    @prayasbatch6915 4 ปีที่แล้ว +4

    before watching this series i thought that gravitational i a boring and tough chapter but after seeing this playlist my concept is clear about gravitation. thank you sir.

  • @vasista5636
    @vasista5636 3 ปีที่แล้ว +7

    43:50 wale questione me 1,4,9 perfect squares the isliye root me nhi honge answer 2 aega kyoki vo perfect square nhi h to root me rhega

  • @shrinildhorda
    @shrinildhorda 5 ปีที่แล้ว +30

    Maja aa Gaya lecture me, Thank you sir 👍✌️🆒

  • @arise20
    @arise20 2 ปีที่แล้ว +1

    Sir in the last question , we can actually attempt the question by second method which will hardly take 1 min
    As we know in escape velocity =√2gR
    Now as we know ; area of P = A
    ; Area of Q = 4A
    As wel know Area = 4πR²
    This implies that escape velocity is directly proportional to R² then simple we can find the ratio of escape velocity of P to Q which comes out 1:2 (so option c)
    Now this implies VQ > VP
    Which lead us to the option one n only (b)

  • @ahanapaul850
    @ahanapaul850 5 ปีที่แล้ว +10

    Sir ur videos r jzt osm nd dey help me a lot...though I m studying in aakash... bt d chapters which dey finish in 3 to 4 lectures.... u dedicate ur whole time for us....thank u so much sir...
    Jzt a rqst sir... can u plz discuss d questions of neet jzt d way u discuss for iit

    • @imsumitbhade
      @imsumitbhade 3 ปีที่แล้ว +3

      that is what called messed up english!😂
      jk..

  • @rehanpatel8218
    @rehanpatel8218 5 ปีที่แล้ว +15

    "15:33 pe sir aisa case kyun nahi aaya ki hum stone ko 90deg mtlb vertically upwards pheke with escape velocity" this was my doubt and at 17:42 the same was started!!! You are great sir!!

    • @pratikkadav3220
      @pratikkadav3220 4 ปีที่แล้ว

      Human being escape velocity provide nahi kar sakta uske liye machine ki jarurat he

  • @notsocool664
    @notsocool664 3 ปีที่แล้ว +4

    At 30.00 , this question could be directly done by ' √2gr ' and r=2R
    Same answer 7.9

    • @TodayiAteMyCat
      @TodayiAteMyCat 2 ปีที่แล้ว

      Did the same thing and got the answer, was starting to wonder if I was wrong since nobody seemed to mention it

  • @sandhyasharma3086
    @sandhyasharma3086 ปีที่แล้ว +2

    aise mahan adhyapak ko mera koti koti pranam 🙏

  • @manahilsawera3347
    @manahilsawera3347 5 ปีที่แล้ว +5

    Osm!!! U learn difficult things in easy manner

  • @elishaelisha7911
    @elishaelisha7911 4 ปีที่แล้ว +1

    I read NCERT with all my heart and never noticed these kinds of points.Morelike I couldn't come up with these conclusions.Of course,I got someone of them my own but all others were only cleared because of you sir, Thank you sir /dhanyavaadh aapka.

  • @Qureshi_Queen123
    @Qureshi_Queen123 3 ปีที่แล้ว +7

    YOU CLEAR MY CONCEPTS AND ALSO QUESTIONS . I REALLY APPRECIATE YOU SIR FOR YOUR EXPLAINATION ON EVERY TOPIC WITH NICE ABD GREAT VIDEO LECTURES ❤️❤️❤️ PHYSICS WALLAH IS THE KING 👑👑 GREAT JOB !!!

  • @sujatamohapatra9490
    @sujatamohapatra9490 4 ปีที่แล้ว +2

    Sir Happy Teachers' Day....I am seeing this video in Sept.5..🤗...Lucky to have a teacher like u...😀

    • @sujatamohapatra9490
      @sujatamohapatra9490 4 ปีที่แล้ว

      Actually I am in class 11th and the notes which I have made for me is immensely much...and I must say that if ur in class 12th then it will be better to see 2 lectures per day and if u continue this method and I am very sure that u can cover 11th with your 12th....
      Thank You...🤗

    • @sujatamohapatra9490
      @sujatamohapatra9490 4 ปีที่แล้ว

      Do 1 thing download Physics wallah app there you will get the hand written notes of sir

    • @sujatamohapatra9490
      @sujatamohapatra9490 4 ปีที่แล้ว

      But I used to make my notes from sir's notes

    • @sujatamohapatra9490
      @sujatamohapatra9490 4 ปีที่แล้ว

      Sir has uploaded 11th notes too....please check it

  • @vikassonu2333
    @vikassonu2333 6 ปีที่แล้ว +6

    The best teacher ever ❤

  • @vishwasrajshukla5792
    @vishwasrajshukla5792 4 ปีที่แล้ว +18

    Lockdown ke baad sir ko award milna chahiye 😃😃😃😃😃😃

  • @truptighosalkar4055
    @truptighosalkar4055 5 ปีที่แล้ว +4

    Sir we are are very thanks to your studying pattern and style for us😎😎

  • @Doremon0052
    @Doremon0052 4 ปีที่แล้ว +14

    14:30 ma app jo samjaa -ve energy, bounded fell nahi Aya. Please sir reply kijia.🙏🙏🙏🙏🙏🙏🙏🙏

  • @arjunclub4994
    @arjunclub4994 3 ปีที่แล้ว +7

    Congratulations🔥💥💥 for 6 million family🥰

  • @jatinkapoor8653
    @jatinkapoor8653 5 ปีที่แล้ว +329

    Alakh sir pe maine POEM likhi hai ⤵⤵⤵⤵⤵⤵
    Sir aapko milega Heaven🏞🏞🏞🏞🏞🏞
    Aapke saare videos hai AK-47🔫🔫,
    Jo karega aapke videos ko Dislike👎,
    Chala dunga mai uspe Bike🏍🏍🏍🏍
    Sir aapka bahut bada hai dil💖,
    Aapki ENERGY💥 dekh ke gaya hu mai hill.
    Hota hu mai aapse Inspire😎,
    Aapke videos karte hai mere dil me Fire🔥
    Aap nhi ho kayar,
    Isliye mai aapka hu Shayar😍😍
    😂😂😂😂😂😂😂😂😂😁😁
    @ sir sabse ALAG.
    Hit like👍👍👍 friends if you AGREE.😁

  • @gauravkumar-el3fq
    @gauravkumar-el3fq 5 ปีที่แล้ว +4

    Nice explanation sir thanku for this wonderful explanation

  • @ramkishoremogili3780
    @ramkishoremogili3780 3 ปีที่แล้ว +2

    Best physics teacher for ever 👍👍👍👍👍

  • @mohimasultana6735
    @mohimasultana6735 5 ปีที่แล้ว +6

    sir ur teaching sense is awesome u ask questions at a perfect time as if u can see us and live before us sometimes i reply as if u r hear me

  • @leavemealoneplease652
    @leavemealoneplease652 3 ปีที่แล้ว +2

    01.escape Velocity at H height?
    02. Escape velocity between 2 planets
    03. Earth, sun and একাধিক potential energy
    04. G/4 hoy, when it is projected at "V"

  • @Asiaticperson
    @Asiaticperson 10 หลายเดือนก่อน +2

    Wow sir awesome lecture 😮

  • @amitahajrachaudhuri2997
    @amitahajrachaudhuri2997 6 ปีที่แล้ว +36

    Sir, In centre of mass chapter,"Impulse,Variable Mass System and Rocket Propulsion" are still pending.So,can you please make videos on these missed topics as soon as possible,Sir??

  • @pintudebnath5050
    @pintudebnath5050 ปีที่แล้ว +2

    One like for sir for solving 2012,2015 and 2017 adv. Questions.
    Thanks a lot .

  • @iamatul4757
    @iamatul4757 4 ปีที่แล้ว +32

    SIR APP JO T SHIRTS PEHENTE HO ,,, WO KHAREEDTE HO YA KHUD SE ORDER KARKE BANWA TE HO

  • @lofiNature_1709
    @lofiNature_1709 3 ปีที่แล้ว +2

    Congratulations 🎉🎉 sir
    5 million subscription has completed on this plateform.
    It shows that alakh sir is heart beat of millions of student's 🤗🤗.
    N thank you so mch sir.. For everything.... You'll always be... My roll model 🙏🙏.
    You give me new definition of ... Education, new definition of life.
    Sir you have proved that what is the hard work,,... What is the struggle... .
    What is the consistency.... What's the dedication.
    This all reasons make you a inspiration for.. All students, person.
    Again..
    Thank you soo much sir.. From heart. 😊

  • @khanabdulshahid4
    @khanabdulshahid4 3 ปีที่แล้ว +10

    ZTS really appreciate your hard work sir.... speacially your extra sound effects, 😂😂

  • @udbhavkrishnagaur
    @udbhavkrishnagaur ปีที่แล้ว

    33:39 here we can also use the formula
    v = sqrt(2GM/R+h)
    👇

  • @parveenfatima7860
    @parveenfatima7860 6 ปีที่แล้ว +35

    😍😍😍😍😍🤗😍😍🤗🤗🤗 love and blessing from kargil ladakh ........

    • @SanjivKumar-gx6zd
      @SanjivKumar-gx6zd 4 ปีที่แล้ว

      Waha internet aata hai?

    • @SanjivKumar-gx6zd
      @SanjivKumar-gx6zd 4 ปีที่แล้ว +1

      Azad kashmir mein haalat sach mein kaisey hai?

    • @parveenfatima7860
      @parveenfatima7860 4 ปีที่แล้ว +1

      yahaaa pay 1 saal hogaya hai jab say 370 hataya gaya tha..tab say bhohot halat kharab hai.... ladakh mein toh aap china ghuspad karraha hai...

    • @parveenfatima7860
      @parveenfatima7860 4 ปีที่แล้ว +1

      @@SanjivKumar-gx6zd internet yahaaa pay 2g hai.....woo bhi jab say Corona virus aaya tab say internet restore kiya hai

    • @raazsaurav1468
      @raazsaurav1468 4 ปีที่แล้ว

      @@SanjivKumar-gx6zd u

  • @balakshikshasadan425
    @balakshikshasadan425 2 ปีที่แล้ว +1

    This is best 💯 lecture on escape velocity on you tube.
    Thanks Sir. My all doubts are cleared.

  • @aliali-ig9zk
    @aliali-ig9zk 6 ปีที่แล้ว +9

    your study style is amazing and I understand very easily

    • @anandsingh7112
      @anandsingh7112 4 ปีที่แล้ว +2

      Your study ni your teaching is amazing...

  • @vasuu0321
    @vasuu0321 ปีที่แล้ว +2

    Mjo aaigo sir ji❤️🤩30:24 bakground 🤣🤣😂

  • @nehagupta-uq5nr
    @nehagupta-uq5nr 6 ปีที่แล้ว +25

    Sir properties of bulk matter please
    Although, best online coaching ever.Hit like if he is the best.
    One like from me

  • @Naman99-r6j
    @Naman99-r6j 4 ปีที่แล้ว +1

    Very nice videos g app bahut acha samjhatay HOA g 👍👍

  • @GurujiMsk
    @GurujiMsk ปีที่แล้ว +3

    39:35 idk why but solving pyq of adv no matter easy or hard always gives a great level of confidence in that topic