Relativistic Kinetic Energy: Simplified | This is Why Nothing can travel Faster than Light
ฝัง
- เผยแพร่เมื่อ 21 ก.ค. 2024
- What is Relativistic Kinetic Energy? Why can no object travel faster than the speed of light, no matter how much energy you provide?
These are the questions I try to answer in today's video. First we will discuss the mass energy equivalence principle. Then we will talk about relativistic energy, mass and relativistic kinetic energy. I will show how the Relativistic kinetic energy can be approximated to Newtonian kinetic energy under low velocity approximations. Using Work energy theorem we can obtain the energy needed to accelerate an object to the speed of light. As it turns out we need to provide infinite energy to accelerate an object to light speed; which simply means that the speed of light is a speed barrier in our Universe. Nothing can reach the speed of light (except massless particles)
00:00 Relativistic Kinetic Energy
09:19 Why can nothing travel faster than light?
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PLAYLIST ON Special Theory of Relativity
• Special Theory of Rela...
-----------------------------------------------------
1. History of Special Relativity ► • History of Special Rel...
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...
7. Relativity of Simultaneity ► • Relativity of Simultan...
8. Can you prove E=MC² ► • Can you PROVE the most...
-----------------------------------------------------
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 ...
22. GATE Physics question ► • GATE Physics: Problem ...
23. TIFR Physics question ► • TIFR Physics: Problem ...
24. Question on Volume contraction ► • Volume Contraction in ...
25. JEST Physics question ► • JEST Physics: Solving ...
26. NET Physics question ► • CSIR-NET Physics Probl...
27. Spacetime Invariant Interval ► • SPACETIME Interval & i...
28. Minkowski Spacetime ► • Minkowski SPACETIME, H...
29. Eucledian Space & Minkowski Spacetime ► • 5 Main Differences b/w...
30. Spacetime Diagrams ► • Time Dilation, Length ...
31. Four Vectors in Relativity ► • What are FOUR VECTORS ...
32. Doppler Effect using 4-vectors ► • How to use 4 VECTORS t...
33. Compton Effect using 4-vectors ► • How to prove Compton e...
34. Particle Decay using 4-vectors ► • Particle Decay in Rela...
35. (SHORTS) Does Light experience time ► • Does light photon expe...
36. (SHORTS) Light for moving observer ► • What is the speed of L...
37. (SHORTS) Nothing can travel faster than light ► • Why nothing can travel...
38. (SHORTS) What is farther away ► • What is farther away, ...
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Relativistic Force ► th-cam.com/video/fYfdIs7GMrI/w-d-xo.html
The last moment punch my thoughts ... And sir I'll try to be a teacher like you ... Who Put all the energy to express the ideas ☺️
Best teacher that has knowledge more than class 12 teacher
Excellent teacher. Thank you for your dedication to physics that makes you able to explain so clearly.
I was wondering about what Einstein says: "everything that has mass has energy associated with it" and how come that light has energy, but no mass?
Crystal clear explanation!! Speechless.
Excellent teacher must be awarded ad padmashri for Popularization of scince
I like your videos which are so simple and easily understood by common viewer. Why are so less views. Everyone please support this chennel.
One more nice video..very good explanation of the relativistic concept. Sir pl make a video on electrostatic forces between two moving charges in terms of relativistic velocity...
Two questions that I've yet to find satisfactory answers to:
1: what does the leading edge of a spider silk molecular structure look like. In other words, What orientation does it have. What does it look like.
2: What does the leading edge of the translating light beam, its front edge, look like. Slowed down by a trillion frames per second, how do we visualize transverse vibration at the surface of that beam.
light helps us see things ...it itself is not visible....you can not see a photon....sorry🤥
Perfect presentation … 🌿
You are so sweet of This.your lectures are very much helpful to us.pls in your lectures, gives more examples.
Absolutely mind-blowing without being relative to anything
Well explained !👏
Very excelente explanation!!👌👌
Thanks sir
Love and respect from Rajasthan
Great sir ji 🙏🙏
I am in software development now but still can't skip sirs video it amazing
the video is just wonderful sir !!!!
Wonderful explanation sir❤
Excellent 👌
❤️❤️❤️❤️ love and respect for you teacher
Great explanation
May God bless you sir
Nice explanation sir 😊
I'm not asking this in a religious context but is it possible that there is a speed limit simply so certain paradoxes can be prevented like causality breaking. seems like universe has a way of avoiding paradoxes
Good lecture .
All these facts are simple mathematics on physical quantities ( with dimensions). But all it end up in circular logic. When we consider energy (E) in other dimension it have no answer..
The observer can make up his mind what energy is ? Values of geometric angle cha nge when work need energy
I admire your passion and teaching skills. That said, what my problem is with this video is that you said that a mass object can't travel faster than c and you also said that it can travel faster than c. You just picked the equation you seem to like better, maybe just because Einstein impressed you more. Newton used valid equations as well. So who's right really? In actual fact, nothing's been demonstrated as far as I'm concerned. Physics people use much too much equation and not enough conceptual understanding to my taste. The only answer you provide in this video is that a mass object cannot go faster than c because your equation says you can't. No experimentation and no explanation. My thought experiments about this most sought question tend to prove Newton. I prefer thought experiments because they get you to put physics in action rather than academic equation juggling, forgive my saying it this way. I don't mean to sound arrogant or pedant. I hope you see my point. All is proven here is the equation you picked over the other one says it can't, and now everybody must believe the equation. I admire Einstein but the relativity principle, to me, proves speed is additive. Experiments will also prove that. But somebody said an equation says it's not additive at much higher speed. Will the sum of atoms of an object equal a different mass or even an infinite mass than at rest because you added kinetic energy that actually transforms in movement? Not to me. But if you do think so, I'd really like to get the explanation.
It hurts videos like these have near 1K views and music or memes have billions of them.
Como é que a energia cinética relativista, organizaria a máteria e criaria padrões complexos ? Existe algo esquizito
Thanks sir 😊🙏🙏
Trying to show this with relativistic correction to Newton's 2nd law can get confusing, thus requiring it to be addressed.
This is so because you can always apply a gravitational field, as acceleration due to gravity is same for all massive particles, this makes it look like you can accelerate a particle travelling near the speed of light to beyond the speed of light, by simply applying a gravitational field. This however is not true.
Thus, it is advisable to rather work in the energy approach, and to avoid confusions, with 4-vectors(like 4-force).
Sir,
In time dilation we derive the equation geometrically or mathematically but it affects biologically how...
?
I could not relate it with human body....?
thank you
Sir statistical thermodynamics ke bhi video bnaye plzz
Respected sir. You r the perfect example of a physics teacher.
Love you dear sir
Sir , What type of chalk you are using
What about something without mass, can that travel faster than light? Currently we don't know of anything, but theoretically??
The tachyon is the particle only they can will be reach the speed of light, 3×10eight
Thank you so much for such precious information sir...🙏🙏🙏🙏🙏 It's really very interesting and clearing so many doubts..🙏But on the basis of quantum mech theories like Many world interpretation & quantum entanglement, there exist other universes where travelling faster than light is possible... & these universes are in higher dim means dim more than space time....
So sir if there is any information regarding this topics and theories... Plz provide sir... 😊
Those all are paradoxes or hypothesis we don't have much proof about them
Nice lecture sir!
I have a small doubt in it. Can't we use the 2nd Postulate of Relativity to "prove" this? If all frame see light at the same speed then there won't exist any frame that sees light with velocity=0
Aren't these two statements kind of equivalent to each other?
In this video we are talking of normal objects, and not light itself
work energy theorem is proved in non_relativistic mechanics....how come we are using it in context of a fully relativistic context which is supposed to be a more general theory than NR mechanics
What about the speed of space itself......
What happens to the excess energy provided ? It can't just evaporate ? I'm guessing the mass of the particle increases with added energy ?? I don't know... Please elaborate on this...
Yes the effective mass of the particle increases as a result of the increase in energy
What's the difference about the concept of ether medium and garivational waves
As LIGO is advance version of mechileson interferometer
Why Ether medium concept doesn't exist??
Ether doesn't exist. It was a hypothesis regarding an absolute frame of reference of the Universe. Acc to relativity, no such preferential or absolute reference frame exists. Every inertial frame is equally valid.
Gravitational waves is the wave of contraction (of space time fabric) that travels through space time after an enormous gravitational event
I have predıcted with my theory and my formula 6.3 tımes greater than the speed of light, which is measured as if apparently inside of M87 black hole. I SUGGEST HAVING A LOOK AT THE FIRST PART OF MY THEORY AND MY FIRST FORMULA WHICH DETERMINES A LINEAR VELOCITY OF...6.3 TIMES GREATER THAN THE SPEED OF LIGHT, ETC. AND I TOLD WHERE OUR MEASURED CONSTANTS ARE ROOTED IN. We need to change the concept of matter that makes us imprisoned by all kinds of impressions and especially by accepting the vacuum illusion which it has been sitting comfortably in it
Sir I want to join your class
Sir are you from ODISHA?
Great video. However how can ordinary kinetic energy (at low velocities) be considered relativistic kinetic energy as you've labeled it at marker 9:13?
he said when you take the low velocity limit v/c
For v/c
Or you can look at it another way. Everything is in motion, just as much as light is in motion. Let's call that degree of motion, the "c" magnitude of motion. So if a spaceship is at true rest in space, meaning being at rest within the spatial portion of the 4D space-time environment, its entire "c" magnitude of motion is now across the dimension of time only. This "c" magnitude of motion thus determines the fastest speed of which the spaceship can move across time. However, if the spaceship begins to move across space, it will of course now be moving slower across the dimension of time due to this change in the direction of travel within space-time. Thus, the passage of time will slow down. But the point is that not only does this ongoing "c" magnitude of motion within space-time determine the fastest speed at which one may move across time, but it also determines the fastest speed at which one may move across space.
👍
Finally I'll get this reason today
Great
You only took 2 min to understand!
@@nandakishorp2436 yes most of the expression sir derived us in college so only I saw the final result 😂😂
Nice Sir
Everything travels at the speed of light in spacetime
@@achyuththouta6957 yes I got some what's similar things while studying GR
Bro you tell about that in graphics called in simple way
Love from Pakistan ❤️
Energia Cinética Relativista
WELDONE SIR
You ought to write the equation of Relativistic mass (m) when Rest mass = zero and
v = C. Then Relativistic mass (m) - Gamma rest mass/zero = 0/0 or Relativistic mass (m) = 0/0.
BUT what does m = 0/0 mean? Is it meaningless, or 0, or infinity? No!. It means Multiple Right Answers. So when Rest mas = zero and v=C then Relativistic mass = m can have a VARIETY of Positive Values. Therefore Different Photons can have Different poitive masses and different energies DESPITE SAME C. Hence a blue photon has more energy than a red photon because it has greater 'm' or Relativistic mass than a red photon EVEN though BOTH have same C.. Also ONLY particles with Rest mass = zero can achieve C. THAT is their secret Strength!
Qutaam enlightenment its faster than light.
Tachyon
I guess that's Talyor expansion
Taylor expansion has to do with derivatives of a function. Binomial expansion is an algebraic expansion of powers
@@FortheLoveofPhysics Interesting, I tried Taylor expansion and I got the same answer, but using Binomial expansion seems a lot easier. I should check that out. Thanks.
Sir, iitjam 2022 batch has started?
Starting from 14th July. You can register at www.elevateclasses.in
I'm sorry, I really have to express this: another aspect I'm discontent with when it comes to academic explanations, is that you start with a mathematical expression (equation) and you use it to "prove" what reality is. Your starting block is an equation. It's like a belief system here. You believe in the equation so much that you state what reality is according to it, (not even what reality could be). Shouldn't it be the other way around. Observation of reality and then find an equation to express it in math form. Seems to me Newton used observations then put it in math form rather than the opposite. You see my point? Again, I don't mean it as a critics but just stating my disagreement.
This video is a part of a video lecture series on Special Relativity. So I Have developed these ideas systematically from the start. They are not random
@@FortheLoveofPhysics Thank you for your answer. I'll look them over.