Answer to the question from a Std 10 student on work and energy
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- Опубліковано 20 сер 2024
- In lifting an object through a height, the work by the person and by the gravity cancel out. Still the potential energy increases. Discussion on kinetic, potential and internal energy.
Respected Sir, your one reply will be moment to remember for a lifetime & will also act as a source of motivation for this young NEET aspirant !
Love you mere bachhe
@@sakshamsharma5930😂
@@sakshamsharma5930Bhai aapko nahi dena tha😂😂
Keep going young neet aspirant I'm with u
Cringe
Kitne log mante hai ki HC sir India ke sabse knowledgeable physics teacher hai ?❤❤❤
👇
Me while watching video - 🙂
Me while seeing your comment - 🙄
@@ytg6663 are kahana kya chahte ho?
@@premsagarpremsagar3840 Yhi ki Likes ki bheek maag kar kya milta hai
@@ytg6663 yaar Bhai ek alag hi sukun milta hai 😂
@@ytg6663 yaar agar aapko koi dikkat hai to bolo main abhi comment delete kar dunga
A new lesson... No question is a simple question. It depends upon our perspective.
Depends on Knowledge and experience
yes.
So true. Each time we take it easy, he proves us wrong!
@@hcverma2928Sir ,i am Harshit, - to deal with the problem of Dual nature of light , I discover '' Morse-code model of Light '' ,this model proof "non monochromatic" nature of light. and this model is also explain "Radiation effect" . this model explain clearly ,why does Light "Diffract" . sir please pay attention to my model, it can help in physics.
@@hcverma2928sir i have a question if light is an em wave then it had electric field and as range of electric field is infinite, it should interact with particles at infinite distance from it's line of propagation, but it is not possible with particle nature. Does light do the same or not, if no then why
I wish we had a good teacher like you.
You are a great teacher.
He wrote a book for jee mains
@@teamf4xhades379 I knew it.physics book of HC Verma sir,,famous book
alakh pandey is there for you
In short what I learnt is, PE is stored in a system due to its interactions internally. If the charges are opposite and are left alone, they will expend this energy and accelerate towards each other. And same with block and earth.
Is it true for elastic potential energy to
I am so blessed that I read HC Verma physics when i prepare for jee mains. 😊😊😊 Thanks 🙏🙏🙏🙏🙏🙏 sir you are Kohinoor 😊😊 for us .
If people teach their subjects like Verma Saheb, then every subject would be full of fun and enjoyment. I have never seen someone like him inject so much passion into his work as he did. Mashallah. I watch his lesson like an interesting movie scene. He knows how to convert the most difficult concept into a piece of cake.
Can you explain this to me. I don't understand Hindi
and as a realtime case, as the person lifting object is standing on Earth, he lifts the mass from groud to height 'h', so for the 3-body system: person, object and Earth, the net energy of system doesn't change.
For a two body system (Object and Earth), the energy of this system increases by 'mgh' as the work is done on an external agent on the system. The potential energy of system/object increases to mgh while change in potential energy of Earth is negligible or zero.
This type questions are put on that mind those BOYS always feel PHYSICS .
👍
Every simple question in a physics is very complicated 🙂
Sir Resoect to you for your books!!! Never made life easier than a simpler language from yours.
I understood from this video that it is very important to decide the system while applying work energy theorem. Moreover for potential energy which is especially conceptualised for conservative field should also be taken care. Generally people say work done = change in Kinetic energy but work done by whom? Remains unknown unless we specify the force which is responsible for work done. Thank you HC Verma Sir ❤.
good.
@@hcverma2928Sir ,i am Harshit, - to deal with the problem of Dual nature of light , I discover '' Morse-code model of Light '' ,this model proof "non monochromatic" nature of light. and this model is also explain "Radiation effect" . this model explain clearly ,why does Light "Diffract" . sir please pay attention to my model, it can help in physics.
@@user-cah036 whats the radiation effect? and all the properties of light are already well explained, and btw literally everything has dual nature, what will you do to explain dual nature of just light?
@@aryanaman7Sir work done on the system means we can say if work is done on any of the particles of the system and if so still net work done becomes zero , gravity and external force acts on the same block opposite to each other 😅 please explain
@@sauravhere... if you have earth and block to be one system then you cannot take gravity as external force albeit it becomes internal force..
Sir had clearly said in this video .Watch again!
Sir main apko apne gurujii manta hu you are vey very excellent teacher of physic.
sir please take lectures from class 6th to 12th as a lot of people have fear from physics but if you teach them then definately it is so benificial for them
he should teach from `11th
Sir, I remember, in 2003 Deb Mukherjee sir taught me the same in his krishna Apartment basement. Heard you two were collegues in science college. Regards Nitish Raj, Scientist at DRDO
Hello sir what do I have to do to become scientist at DRDO, I am currently in class 11 and studying for JEE
Number 1physics teachers of all time 👍👍
Search latest tweets of @lal_shiban
Click & go to pinned tweet.
It's a question paper 📜
No Hindu professor could reply.
Now ask Sir to solve Q 5 & 11
Right!
@@shibhanlalpandita6975 Sir ,ye tweets Mai kaha pe dekhu ??please tell!
It can be also understood as follows. Positive work done on a particle increases the kinetic energy of particle. Negetive work done removes that kinetic energy and converts it into potential energy.
Sir your smile makes concepts of physics as a piece of cake. It tastes very sweet after understanding...
Sir, I thank you very much for this amazing lecture. I still cannot believe that I just met you a few weeks ago when you were in Jaipur, at the Jaipur National University. There, I secured 2nd position in the quiz, and was awarded by you. Sir, thank you for everything. Due to all the hecticness, I was not able to talk to you, but I just want to say, that you and your fellow teachers have again sparked a joy for science and maths, which I had as a child, but lost it due to competition. Thank you sir ❤ 🙏🙏
Very nice. All the best.
@@hcverma2928Thank you sir🙏🙏❤❤🥺
congt bro
@@AdityaJee-us1pq
Thank you sir ❤ your teaching your books and everything you have done for us 🙏 helps me so much in studying 😊
0:03 amit kumar ji........
Hats off to the God of physics.
Internal energy doesn't shows any change due to not change in temperature of particle
Kinetic energy doesn't show any changes because velocity of block is same
Potential get change because we took it up from a position to height H
Truely Legend of his subject we had honour to have luck to seek guidance of sir @HC Verma
If we only consider the block change there is no work because mgh + - mgh cancel out each other but if we consider both block and earth potential energy with external force applied by a body the system potential energy will increase with mgh and the work done will happen
Happy Diwali, sir you are the inspiration for youth that being a BSC student you can rock in your life
😂
HC Verma, thanks for making the globe your virtual class audience..cheers to power of internet and youtube
happy diwali sir, i will give my JEE exam in 2k25 all i want is blessing from you
Sir why voltage remains same and in parallel connection of wires where as current differs why ?
Imagine a water pipe with water flowing through it. If there is a section where the pipe is in parallel, the water should split up and flow into the three different pipes in parallel. Similarly, current divides into the three wires in parallel, maintaining a consistent pressure (voltage) across all branches.
Mukul, This is an example. Please give more credible and detailed answer.
Because all the branches in the connection have same starting and ending point, so all will have same potential difference and so the voltage
Potential difference across the two junction points is same.. irrespective the current diverges or not
In parallel combination, the end points are same. Hence, the potential difference between the two end points remain same.
I really appreciate your each lessons sir....❤
This video makes my concept clear
Thank you sir 🙏🏻🙏🏻
Excellent video as always ❤
Just wow 😮
What a concept clearty
Wow wow and wow
Thank u so much sir
Please explain to me. I don't understand Hindi.
This is amazing!!
Entirely different concept abt. P.E and so precisely explained.
That is why i love professor hc verma even i am doing bsc anaesthesia but still reads concept of physics by hc Verma sir ❤❤ no one is like professor hc verma the way sir has explained michelaon Morley fringe experiment was magnitude hc Verma sir is father of physics ❤
Ye baat baar bhul jaata hu ki potential energy system ke liye defined hai...thnx!😊(class 12)
According to Ohm’s Law, Current is directly proportional to the Potential Difference, but in case of Alternative Current, why the current is inversely proportional to Potential Difference.
Why there is contradiction between two expressions:-
(i)Ohm’s Law:- Current(I) directly proportional to Voltage(V)
But in case of Alternative Current, why the Current is inversely proportional to the Potential difference, due to which energy loss is minimized during the transmission of AC Current at such high voltage(11kV)
i.e., Power(P) directly proportional to Current(I) and Voltage(V)
=>P=VI
=>I=P/V
we use + and - as directions also like - is opposite direction and + is with the direction{here direction of force applied by you on the body}
Thanks sir
Is video se Kitna concept clear ho gye
All the best
Potential energy is of a system (earth + mass ). Therefore, the work done by the gravity , which is. Not an external force, is. OT being considered. Thank you sir
Thank you so much for amazing and interesting lecture.
Separate fan base for professor's smile
Sir, you are heart of India. You are indigenous physicist.
🇮🇳🇮🇳🇮🇳🇮🇳🇮🇳🇮🇳🇮🇳🇮🇳
Respect sr
Aapka bhut dhanyawad
Jo aapne utube ke madhyam se apna knowledge share Kiya 😊
निवेदन h
Ki आप 9/10/11/12
क्लास की physics Hindi me
Btae taki Jo bachhe padhna chahte h
Aur sahi direction nhi pa rhe h
Unhe real physics padhne ko mile
Dhanyawad,,✍️🙏🙏🙏
Any question's level can be determined when a person with known intellectual prowess is dealing with that question..Simply put, it depends on the person who is dealing with that question.
sir I have two questions
1)if light has no mass then why it is attracted by the blackhole?
2)std 8th sse padhaya jata hai ki electron nucleus ke around circular orbit me motion krte hai but ek orbit me toh multiple electron hoge ,so internal repulsion ki vajh se circularr motion kaise possible hai and actual motion and path kya hai electron ka??
Other way to think work done by normal force when you lift the block which will be in direction of movement of the block and we know that since block is not accelerating Normal is equal to mg.
System 1: When earth and block different systems.
No net change in energy in the block when we lift it up because work done by gravity and work done by us cancel each out. Potential energy of the block will depend on the square of distance between the centre of block and centre of the earth.
System 2: When earth and block both are 1 unit. Then net energy of the block is +mgh only (not -ve) because the external force acting on it is acting away from the unit (both earth and block). And work done by gravity is not considered because "resultant (or net) energy of a body is the sum of external forces acting on it." But since we considered earth and block as 1 unit, work done by gravity is an internal force, so we ignore it.
I hope I can explain it correctly :)
Well if you used " us" then there are 3 bodies total(earth human block) and you forgot to consider normal
@@cuterancesama628 "us" means that external force that causes motion in the block.
What do u mean by "normal" ?
@@sukanyasinha48 I meant normal force.
Let's say a man is holding a block on his hand and here 1. Gravitational force is applied 2. To cancel out that force a normal force from hand is applied to it .
3. A additional force my man is required to move the block up
@@cuterancesama628 That system 3 of yours (where you are also taking normal force) will also cancel out.
@@AS-fo3ew I never said what he is saying is wrong. I thought that forces are not adding up, just reminded him
Mechanical energy will always remain same
As we take the block above the ground potential energy increase while kinetic energy decreases
As, mechanical energy = P. E. + K. N.
vgerh vgerh vgerh vgerh is more knowledgeable than many so called physics teacher's😂
Sir, Great video. Interesting question. Very well explained.
hello sir I m a student of class 11th currently and I really like the theory of the your book sir,thank you so much for sir😇😇
My question is " Does a charge undergoing acceleration within a gravitational field emit radiation? " I have been thinking about this situation for quite some time since my 11th grade and could not come up with any possible answer. I have also asked this to many physics teachers and professors but could not get a satisfactory response. According to classical electromagnetism, an accelerating charge emits electromagnetic radiation. However this scenario touches upon the intersection of two fundamental theories in physics-electromagnetism and general relativity.
yes. it would emit radiation. why do you think it won't?
Check all the videos and correct me if you can find a straight forward reply for any question.?
Physics Mai masters bhi karloge toh bhi direct answer nahi de paoge .
Sir sab cases ko baatake case ke hisab se sabse sahi answer dete hai.
Thank you very much sir for motivating me to study physics in a new way👍🏼
Sirji please make a video on how to study physics in a good way?
Thank you sir for your Lessons on Physics, Sir please upload a course on General Theory Of Relativity for Beginners 🙏🙏
a message from rochak
seriously sir love to see your videos Sir ! High Respect Sir
Beautiful hair style
Thank you
This is very underated channel
Fantastic explanation sir please
Keep uploading this type of videos its really helpful for us ❤
Thank you, I will
@@hcverma2928 its very inspiring to hear u sir
बचपन में फिजिक्स में मेरा बहुत इंटरेस्ट था IIT Clear कर सकता था लेकिन अच्छे टीचर न मिलने के कारण मैं कम्पटीशन नहीं निकाल पाया 🙂🙂 और कैमिस्ट्री वाले ट्यूशन के लिए लूटते थे 🙂🙂
Wish you were on UA-cam back when I was in school
गुरुजी प्रणाम स्वीकार करें 🙏🙏
I understand by this video that we should not take Questions simply we should try to answer that question . I depends on how we do
Genious
Kya anand mein hain sir. I wish our maths and physics teachers were like you.
Bhai paper Aisa conceptual ayega pass hona bhi mushkil hojeyga fir school bhi😅
Sir I wanna ask a question
Does current depends on frame of reference ?
According to formula
I=neAVd
Vd is drift velocity
so let's take a hypothetical situation where a particle is placed near a current carrying wire which is moving such that relative velocity of particle relative to e+( for this situation consider that positron moves because I'm not able to explain this with electron) is zero so in the frame of reference of particle current(according to this formula) should be zero
so there is a confusion for me sir please reply
We didn't talk talk about this in 11th & 12th currently I'm in my drop year
No, if electron from one frame of reference is at rest then kernels (positive ion of metal, which is actually at rest as seen from ground) will be seemed to move in backward direction so that's why in that frame kernels will create current. Hope I answered what you asked.
@@govindprajapat5261ya I got that thanks😊
@@Awadhesh16 My pleasure!
@@govindprajapat5261 aap konsi class mein hai?
@@Awadhesh16 I am also in drop year
your smile is awsome sir
Sir you are best I wish I would have got teachers like you In class 10
Sir Goodreads... This is Abhishek Chaturvedi, student of class 10th ICSE.... There is a confusion that, when a stone tied with a string is spin. What force acts on hand ... Some says Centripetal force even my physics teacher and senior teaches.. but I think it's reaction of Tension in string only.. please concer my request and clear the doubt
oh sir i have no shame to say that never thought why its +mgh when net work on the body is zero but today as u explained i got it thank you sirrr and when we say it has mgh its when we are ext agent and earth and body is system and when if we only see body then no change in its KE and net work is also zero and potential has not yet came into picture got a new lesson thnx lot
Namashkar sir
I am Deepak ,(class 11th)
Sir jab hum ik ball ko horizontally ghumate hai apne upar jo ki string se bandhi hue hai to jab wo Puri tarah straight ho jati hai tab tention ko to mrw²balance kar leta hai lekin us samay gravitational force ko konsa force balance karta hai jisse wo ball niche nahi aati
Sir i have a doubt
We know that work done by magnetic is always zero as the displacement is perpendicular to force by magnetic field, we can say it doesn't depends on the path it moved on which shows conservative nature
So, why do we say magnetic field is non conservative in nature.
Sir pls pick my question, u r my inspiration in life and thank you.
Pls pick this question
I like physics just like your hairstyle sir❤
When we Put the water in the vacuum or in the space the water is not boil according to the definition of boiling point the vapour pressure of a liquid is equal to the atmospheric pressure so liquid will boil so in the vacuum atmosphere pressure is zero and liquid vapour pressure is also zero when we put the liquid or water in the vacuum why water is not boil ?
Because vacuum has no temperature.
Guruji, Pranam Nepal se. 🇳🇵 ❤
Great Explanation Guruji...
∆U=Work done by conservative force
From alakh sir
Would be a great advisor in astrophysics field.
Wonderful as always
Thank you so much 😀
Sir aapki kahani ka part-28 bhi upload krdijiye😊
Sir 🙏🙏
Naman h apko
Pranam Sir🙏🙏
Very nicely explain this question sir
Thankyou sir🙏🏻
Most welcome
@@hcverma2928Sir ,i am Harshit, - to deal with the problem of Dual nature of light , I discover '' Morse-code model of Light '' ,this model proof "non monochromatic" nature of light. and this model is also explain "Radiation effect" . this model explain clearly ,why does Light "Diffract" . sir please pay attention to my model, it can help in physics.
Happy Diwali sir ☺
Amazing video😇❤
Thank you so much 😀
@@hcverma2928 😇💞
Sir agar koi mass earth per ho to bo mg force nice ki oor aggta h to use force ko balance karne earth mass per Normal force lagati to jab hum mass to uotayege to mg force ko balance karne ke liyehum ko mg force lgana padega kyuki mass earth ke contect me nhi h and upper legane ke liye exta force lagana padega na❤ explain kardigiye na sir please
Thanking you sir for this wonderful concept ❤
Your teaching is wonderful as always
Living legend. Hcv sir❤
Why does an object moves upwards when it is rotated with acceleration relative to the vertical line?
Thnx sir mera doubt bhi tha ab solve hua
QUESTION --->Assume a normal circuit, if we increase the voltage in the circuit, would the energy carried by each mobile electron increase or rate of no of electrons flowing through a cross section at an instance increase?
(Also if one is correct then why the other is wrong)
Second is correct, as due to ohm's law , don't know about 1st one
V=IR,R= constant,
V depend on I
I=Q/T,if t=constant,
I depend on Q
Q=ne
V directly proportional to n(no. of electron)
Oh yeah I remembered current= neAV so yeah velocity also increases
Thank you from deep of my heart ❤️
Sir, please make a video on different forces and torque on a moving cycle
Sir I am this student amit Kumar.
If a man is at rest and he saw that moving charge creates the magnetic field and women with same speed as the moving charge is travelling then for the man there is magnetic field and for women there is no magnetic field. As the moving charges create a magnetic field is a fundamental phenomenon of electromagnetism .
So sir what will be your conclusion on it plz explain me
Nicely explained ❤❤
Sir apsee request hai aaap.plzzz ek baar 10 aur 12 ke saree chpterr ke videos bana deen plzz sirr bachoo ki sari problmm solve hojye plzz sir🙏🙏🙏🙏
Sir please explain this paragraph
magnetic field never
does any work on charges as magnetic force acts in direction
normal to their motion. We can modify this statement as net
work done by magnetic force on moving charges is always zero
but it is possible that there are work done involved by magnetic
forces in a system but equal positive and negative work causes
Ano net work done. In the phenomenon of electromagnetic
induction magnetic force does negative work on mechanical
agents who are displacing a body which contains charges and
extract energy from mechanical work and does positive work on
charges in inducing EMF in the conducting bodies which may
cause induced current to flow if circuit is closed. Always total
work by magnetic forces is zero in system but it acts as a
mediator in transformation of mechanical energy to electrical energy
Sir, in 'light' chapter I learnt that after passing through a mirror or lens if parallel rays are emerged they can meet at infinity.
But how is this possible to meet two parallel rays???
When something is meeting at infinity, it means that it is never going to meet because infinity is infinite
For easy explanation:
Imagine 2 parallel railway lines, when you will look into the distance, the tracks will appear to meet at a point on the horizon.This meeting point is 'infinity'. The tracks never meet but the way we percieve distant parallel line makes it look like its meeting at infinity
This same doubt troubled me for a week and I kept searching for answer until i went through the lectures of nv sir and physics galaxy book , I wish this video had been uploaded earlier
Please explain to me. I don't understand Hindi.
#question can we explain VBT theory in chemistry about bonding and antibonding by using interference of waves ?
Yes offcourse
@@Java_Ram_जवा_रामshow
Very interesting ❤
I am studying in 12th but by using all the formulas I know, I was unable to prove or calculate
@@vedantv.khairnar1181 bhai wo quantum mechanics se hoga....
hail the man with no haters
Can someone explain why we don't count the kinetic energy?
Sir ...I don't know how to say.... I'm just a dropper after class 12... I've attained your every course...from the Newtonian mechanics to the last one magnetostatic. I've interest in Physics and Mathematics. Sir some days ago I got an offer from University of Leeds in the department theoretical physics. Sir , should i join? As you're one of the greatest Physicists , if I get your guidance, it will means a lot to me...
Pranam Sir,
how did you got the offer?
If u are financially good then go for it Bruh
And second thing is that if u are interested to Study Physic then it's just go for it.