Length Contraction (& Angle) of Inclined Rod (STR)

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  • Опубликовано: 14 май 2021
  • If a rod is moving in a direction at an angle inclined to its length, what is the nature of length contraction measured by an observer at rest? What is the change in inclination or orientation of the moving rod or stick?
    Length contraction or lorentz contraction is a consequence of Special theory of Relativity, in which an object moving at relativistic speeds appear to contract along the direction of relative motion with respect to an observer at rest. In this problem, I consider an inclined rod, or a stick, or a ruler. How does it's length get affected? And how does its orientation change at relativistic speeds?
    #SpecialTheoryofRelativity #STR
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    PLAYLIST ON Special Theory of Relativity
    • Special Theory of Rela...
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    2. Michelson Morley Experiment ► • Michelson Morley Exper...
    3. Special Theory of Relativity ► • Special Theory of Rela...
    4. Time Dilation (Thought Exp) ► • What is Time Dilation?...
    5. Length Contraction (Thought Exp) ► • What is Length Contrac...
    6. Lorentz Transormations ► • Derive Lorentz Transfo...
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    8. Can you prove E=MC² ► • Can you PROVE the most...
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    9. Special Theory of Relativity ► • Special Theory of Rela...
    10. Length Contraction ► • Length Contraction (Sp...
    11. Length Contraction of Inclined Rod ► • Length Contraction (& ...
    12. Time Dilation ► • The Mind Bending Predi...
    13. Muon Decay Experiment ► • The Mind-Blowing Proof...
    14. Relativistic Velocity Transformations ► • Derivation of Relativi...
    15. Speed of light in moving medium ► • Speed of Light in a mo...
    16. Relativistic Doppler Effect ► • What is Relativistic D...
    17. Relativistic Mass? ► • What is Relativistic m...
    18. Relativistic Kinetic Energy ► • Relativistic Kinetic E...
    19. Relativistic Force ► • Relativistic Force
    20. Relativistic Energy & Momentum ► • Relativistic Energy an...
    21. Magnetism arises from Relativity ► • The Hidden Connection ...
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    23. TIFR Physics question ► • TIFR Physics: Problem ...
    24. Question on Volume contraction ► • Volume Contraction in ...
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    27. Spacetime Invariant Interval ► • SPACETIME Interval & i...
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Комментарии • 61

  • @FortheLoveofPhysics
    @FortheLoveofPhysics  2 года назад +2

    Time Dilation ► ruclips.net/video/wIS-LvdsAzg/видео.html

    • @rinkuyadav9264
      @rinkuyadav9264 Год назад

      Sir why we are considering length of rod in y axis as length can be calculated by x axis only ?please tell ...

    • @sbkarajan
      @sbkarajan 4 месяца назад

      So I have a question.
      If the universe is expanding, and the furthest ones are traveling at 2-3 times the speed of light relative to us.
      How can you measure the relative time differences, length contraction between us and them?
      Is our clock ticking slower, or the galaxy far away ticking slower?
      Or they tick the same rate, like standing still each other?
      But the light wave red shifts?
      Did anyone try to solve this using general relativity, field equation, Schwarzschild metric?

  • @huynguyenanh8984
    @huynguyenanh8984 Год назад +1

    Man the way you explain is so clear and easy to follow along, thank you so much! Keep it up!

  • @robertreynolds8679
    @robertreynolds8679 2 года назад +2

    Thank you very much for a really great explanation!! It was clear, succinct, and easy to follow!

  • @cerak4971
    @cerak4971 2 месяца назад

    Thank you very much, sir!

  • @abdelrahmanelbatran1164
    @abdelrahmanelbatran1164 5 месяцев назад

    amazing explination good job

  • @gauravkhanduri1087
    @gauravkhanduri1087 2 года назад +1

    short, Simple ,EFFECTIVE
    thank you sir

  • @harry-ho9ti
    @harry-ho9ti 3 года назад +3

    Its just a rock on lecture. Thx sir.

  • @HimmatBording
    @HimmatBording 3 года назад +3

    Thanks for using green Board sir..
    With the green board, we feel like classroom and the lesson becomes very catchy.

  • @Novikiene
    @Novikiene Год назад

    Sir, you are saving my mental health a bit at a time. thank you :)

  • @_Otlotleng
    @_Otlotleng 2 года назад

    Good and clear explanation. You've gained me as a subscriber.

  • @cavendishcavendish1367
    @cavendishcavendish1367 7 месяцев назад

    This teacher saves my semester ✨✨💎💎✨✨

  • @rusherborjel3412
    @rusherborjel3412 2 года назад

    Thank you so much!

  • @manaoharsam4211
    @manaoharsam4211 Год назад

    Very good explanation.

  • @wisdom6486
    @wisdom6486 Год назад

    Thank you so...much...sir...You saved my life🙂

  • @rainbow_doglover8301
    @rainbow_doglover8301 5 месяцев назад

    thanks so much!!!!!

  • @vikaskumarkushwaha5599
    @vikaskumarkushwaha5599 Год назад

    Superb explanation sir❤

  • @souravdey1227
    @souravdey1227 Год назад +1

    I understood how the angle changes. But how does the rod seem to be inclined with respect to which point? Which is the hinge point?

  • @brehanemeskelifa366
    @brehanemeskelifa366 Год назад

    Tnx professor. I'm from Ethiopia. It does really helps

  • @FTFEOfficial
    @FTFEOfficial Год назад

    Omg you explain it so well

  • @kapishsingh
    @kapishsingh 3 года назад +1

    Jaigurudev 🔥🔥🔥🔥❤️❤️❤️🙏🙏🙏

  • @pawan.creator7460
    @pawan.creator7460 2 года назад

    thank you very much
    you saved me
    I have exam tomorrow

  • @hussainahmad8052
    @hussainahmad8052 2 года назад

    your lecture are best pls recomended book name mension

  • @vanshtibrewal4791
    @vanshtibrewal4791 Год назад +1

    Sir the way you explain such complicated topics are just marvelous.I am a student of class 9 and not quite familiar with it but the way you explained it i understood everything. Lots of love to you sir❤️

    • @thetenrings
      @thetenrings Год назад

      Yo same with me I am reading rindler's book on special relativity and solving a problem on a rod that in parallel to the x axis and moving in the y direction according to an observer and finding the angle it is inclined towards according to a moving observer. This helped a lot

    • @rajkishore3181
      @rajkishore3181 10 месяцев назад +1

      Wtf why are u watching this when ur in class 9...it's an engineering based level topic taught in college

    • @mmshdgmus3166
      @mmshdgmus3166 9 месяцев назад

      Wah yaha pehle apna padhai insa hoo nahi rii length contraction samjhne aaye hai 😂😂 pehle board da ka pass ho Jaa fir 11-12th mein medical ya engineering lekar college(Enjeneering college)mein Jaa ka jaab padhega taab dekhyo 😂😂

    • @mmshdgmus3166
      @mmshdgmus3166 9 месяцев назад

      Pehle calculation aur vector padhla fir dekhyo maan kare toh 3-D bhi padh lio

    • @mmshdgmus3166
      @mmshdgmus3166 9 месяцев назад

      ​@@rajkishore3181haina bhai sahi bola jitna inn laundo ki buus nahi usse zyada bade paar baan rahe hai inse inki apni padhai honi nahi jisko dekho woh scientist baan raha hai 😂

  • @_boss_baby_
    @_boss_baby_ 3 года назад +2

    Your lectures are The Best❤️

  • @ROHITKUMAR-uh4jw
    @ROHITKUMAR-uh4jw 3 года назад

    Sir ji plzz start a series for iitjam paper .love u sir

  • @fabriziosantin6063
    @fabriziosantin6063 10 месяцев назад

    Small correction, in the two formulas at the bottom, there is a theta 0, not just theta.

  • @keyconcept1248
    @keyconcept1248 3 года назад

    ❤️❤️

  • @russianstorm8091
    @russianstorm8091 2 года назад

    Sir ,I have a question how a square will appear to an observer moving along the diagonal of the square. Will it be a square or a rhombus ?

  • @sauravveedu5667
    @sauravveedu5667 3 года назад

    Sir, angle construction goes 90 degree or 180 degree

  • @orikpeyang4043
    @orikpeyang4043 2 года назад

    Sir please update the class.

  • @ImranAli-bf9ok
    @ImranAli-bf9ok 3 года назад

    Sir, will you start GTR after the STR series???

  • @nareshkumawat8899
    @nareshkumawat8899 3 года назад

    Sir if direction of the the moving frame in -x axis means towards the the leb frame when what will the angle of inclination?

    • @FortheLoveofPhysics
      @FortheLoveofPhysics  3 года назад +1

      It would be the same since (v)^2 term is unaffected by positive or negative direction.

    • @nareshkumawat8899
      @nareshkumawat8899 3 года назад

      @@FortheLoveofPhysics ok thanx 😇

  • @radha94
    @radha94 3 года назад

    I have a question is Gravity a fictitious ?? Could you please make a video about it

    • @FortheLoveofPhysics
      @FortheLoveofPhysics  3 года назад +1

      According to GTR, an accelerating frame is equivalent to a frame experiencing gravity. So in a way, yes. I may make a video on equivalence principle at the end of str-mini series let's see

    • @radha94
      @radha94 3 года назад

      @@FortheLoveofPhysics I have a question
      Is ground consider as non inertial frame of reference and falling frame consider as inertial frame of reference ?? In general relativity???why do they fix inertial frame as falling frame? What is the reason for that? Could you please answer my questions

  • @mohapatrajagdish03
    @mohapatrajagdish03 3 месяца назад

    Sir..Are you from Odisha?

  • @radha94
    @radha94 3 года назад

    I have a question
    Is ground consider as non inertial frame of reference and falling frame consider as inertial frame of reference ?? In general relativity???why do they fix inertial frame as falling frame? What is the reason for that? Could you please answer my questions

    • @bhardwajsiddharth
      @bhardwajsiddharth 3 года назад +1

      in my opinion -- falling frame is inertial Because It is unaccelerated ( as value of acceleration due to gravity is constant i.e. 9.8 m/s^2 ......where as the ground is considered non - inertial because Earth's motion is accelerated .

    • @radha94
      @radha94 3 года назад

      @@bhardwajsiddharth but why can't we fix ground as inertial??

    • @bhardwajsiddharth
      @bhardwajsiddharth 3 года назад

      If a problem demands ....we can fix it as an inertial frame ....

  • @p.g.bharadwaj8545
    @p.g.bharadwaj8545 3 года назад +1

    Bro one question. Why are there 8 types of gluons, not nine? Plz ans this

  • @anilkumarsharma8901
    @anilkumarsharma8901 10 месяцев назад

    stock market ka time dilution nikalva do phir sari duniya ki economy following karegi

  • @sahajsopephysics5075
    @sahajsopephysics5075 3 года назад

    Sir one question. Does length of rod actually get contracted or it appears to contract?

    • @FortheLoveofPhysics
      @FortheLoveofPhysics  3 года назад

      As measured by an observer - in relative motion wrt rod - it is contracted. But as measure by an observer - at rest wrt to rod - it is not.

    • @noemiperez5090
      @noemiperez5090 Год назад

      @@FortheLoveofPhysics But where is the rest of the length? In time axis? Things can't get contracted in space.

  • @AngadSinghKushwaha9452288059
    @AngadSinghKushwaha9452288059 Год назад

    Very impressive lecture

  • @souravrana3585
    @souravrana3585 3 года назад +1

    ❤❤