Much appreciated The thing which many people in comments didn't notice in your explanation normal force Is due to collision in this case it is contact force keeping body in equilibrium collision value in this case is equal to mg because it is in rest which is pair of normal force
Force by particle 1 on particle 2 at the same time of instant force by particle 2 on particle 1 are equal in magnitude and opposite in direction along the line joining the particles
This was the first thing that you spoke about and i was knowing it well beforehand. Otherwise all of your youtube videos are surprise packages. 😊😊😊😊😊😊😊😊😊
How mg is acting on the box?? The box is giving mg force to the ground and the ground gives a opposite reaction which is also mg. So they act on different object
In the (N=mg) as both the forces are equal and opposite the total net force will be (0) and the 1st law says (if no net force acts on body) so you get the point that (N=mg) is also accurate
Thank you so much sir.... I am a GATE aspirant from tamilnadu... Generally in our state few people have even awareness about GATE exam and rare of them prepare hardly to crack it... In my college I ruined about 3 years with a cgpa of 9.2... But when I saw the gate level questions I even didn't understand the questions in some instances... Then I joined exergic and I was really really impressed by your way of teaching.... I don't know whether you are the best person to teach for GATE mechanical engineering in India but for me you were the best teacher I have ever met in my life.. It's really true sir...... Now successfully I have watched 95 percent of the videos uploaded in exergic and getting ready for GATE 2020 sir,,,!!!
6:18 It is also NOT happening because of the 1 law, but rather 2nd law. 2nd law is, ΣF = ma , if you put a=0, then also ΣF = 0. Then, the 1st law is derived from the 2nd law. There is no need for the 1st law, right? No. Laws in physics are not light things. Laws are not corollary of other laws. Something is not given the status of a law unless it has something very important and different to say. Then what is 1st law actually saying? Just like the 3rd law, Newton's 1st and 2nd laws have very much confusion to it too. If you are interested, you can read further to get everything clear, I am going to explain everything from scratch. Story starts from force. What is force? (pause and think the answer) Force is an interaction between two objects due to some of their properties. The knowing of one body that the other body exist is force. Then, we will see further, the body reacts to that knowledge that other body exists by changing its velocity, i.e. by accelerating. Now, there are only and only 4 Forces in nature (4 fundamental forces), two of which are significant only inside the nucleus (strong and weak nuclear forces) and the other two being significant in the bigger world, i.e. Electromagnetic force and gravitational force. Naturally, we would discuss only these two bigger forces. EM force is given by Lorentz force law, F = q(E + V×B)...(charge-charge interaction) Gravitational force is given by , F = (GMm)/r²...(mass-mass interaction) From these, we can infer that forces are not dependent on the reference frames. How? Force depends on charge, mass and length. All of these are frame independent (in non-relativistic mechanics). Therefore, Force is also frame independent. But by our knowledge of Newton's 2nd Law, ΣF = ma, we get to know that forces are dependent on reference frames. (Since acceleration is frame dependent and this law relates force with acceleration). Therefore, there is a certain problem here. Which one is correct? Which correctly defines forces? Fundamental forces laws or newton's second law? The answer is clearly fundamental forces laws, since they are the definition of force. So is the Newton's 2nd law wrong? In most cases, yes. But there is a special case where it not wrong. There is a special frame of reference where this law holds correct. That frame is named inertial frame. Therefore, NSL is a conditional law. • 1st and 2nd Law 1st law defines that special frame, the inertial frame. 1st law gives the condition for the validity of the 2nd law. "If in a frame, ΣF = 0 (by fundamental force laws) on an obj implies a=0 of that obj, then in that frame , acceleration of any object is equal to ΣF on that obj divided by its mass, i.e. a = ΣF/m" 1st law does not say that if ΣF = 0 then a = 0. It says that in any frame where this is true, you are free to apply 2nd law from that frame. This is precisely what 1st and 2nd laws says. But, how are going to find that special, inertial frame of reference? By the law, we first need to find an object on which ΣF = 0 (by fundamental force laws), then find a frame such that the acceleration of that obj wrt that frame is also zero. Then, only a force can cause an acceleration in that frame. Bingo! We have found the inertial frame. But wait? Is this practically possible? Is it practically possible to find an obj on which ΣF = 0 ? No, it isn't. Every object is applied by an uncountable amount of forces from different celestial bodies. Not only the Earth is applying the gravitational force on us, but also the sun which keeps us revolving around it, and also other parts of the galaxy, which keeps us revolving around the blackhole at the centre of our galaxy. Therefore, it is impossible to find an obj with zero net force. What we do then is a very clever approximation, which I'm not going to explain here. The results get us the practical definitions of inertial frame, which are, 1. If you are close to the earth(or any other planet) and the rotation of the earth is not talked about, then the surface of the earth is taken as the inertial frame (along with all non-accelerating frames wrt the it). 2. If you are close to the earth and rotation is also considered, then the axis of the earth is taken to be the inertial frame.
mg is given by the block on the surface and N is given by the surface on the block so I think mg and N are action reaction pair in this case....................
The normal force arises due to pauli's exclusion principle(in principle)....At microscopic level the electrons on the block tries to push the electrons on the table but it is repelled by the electrons of the table. Now matter as a whole is neutral. The electrons has distribution inside atom right. Then we try to distort the electron distribution of the atoms of the table by the electron distribution around atom of the block. But pauli's exclusion principle doesnot allow to do that. That is kind of the story with the normal force.....
Thanks a lot sir !!! I always thought if Normal force is the reaction of mg and Normal force on surface the reaction of the first normal reaction, then it would start a chain. I discussed with many of my peers and couldn't come to a conclusion. Then after much pondering I came to same conclusion as yours, the reaction was mg on earth's center all along. Thank you very much sir for giving me assurance and making me feel grateful to think physics rationally. ❤
There is opposite force not an equal force.That's the meaning.Imagine the air blower of bernoulli if you apply force in the ball going up it cannot continues to going up cause downward force cause by gravity pushing too. Thats it
Very nice and short explanation. The way I always like to see it is to consider that in reality, what happens is that objects INTER-ACT, and a force is really just the partial point of view of that interaction as seen from one of the objects. It follows from this view that, naturally, since down deep what we have is an interaction, then the partial view from one of the objects is directly, and necessarily, equal and opposite from the partial view from the other. For example, gravity pulls objects together, period. Clearly, though I can see that pull, partially, from object A as "A-mass * g", it is necessarily the case that, from object B, that pulls is "B-mass * g" (and those with opposite direction).
Sir my question is simple What if both objects are coming with some magnitude of force then both forces are can be considered as action forces and reaction force of them
One doubt sir! when you try to move a block by some force the block moves but according to Newton's third law the block shouldn't move as there a equal and opposite reaction they cancel out. Note: the force are already in pairs as 1) the force applied by you 2) the friction by your foot and ground 3) the force by the block in opposite direction 4)the friction between the block and ground
I feel very strong in concepts of physic as newtans third law is base for many concepts in physics I stroggled lot due to this.❤ And I am really happy as you made the vedio in English thank you lot.
Before watching this viedo i thought n and mg are pairs,but for a silly example sir said what if it a block is tied to a string then t=mg,mad i got finally reliased about 3rd law,,i am a 12th class jee student,always a bit confused for these type of hypothetical concepts and even pseudo force etc...anyways thanks for the clarity sir
Sir, or anyone who'll listen, it seems Equilibria occur in pairs as well, as forces do? net Force on my resting body: ∑ F = -mg + N ∑ F = 0. net Force on earth: ∑ F = +mg - N ∑ F = 0.
Light can break Newton's third law: Wimmer, M., Regensburger, A., Bersch, C. et al. Optical diametric drive acceleration through action-reaction symmetry breaking. Nature Phys 9, 780-784 (2013). DOI: 10.1038/NPHYS2777
Sir the surface exerts a normal force on the block and the actual reaction force is the normal force exerted by the block on the table. Now if we talk about the sign convention then can the 2nd normal force be considered as negative if we consider the upward direction positive
If both the bodies apply a force on one another the reaction will be the opposite forces applied or the normal reaction to the force applied by the body ?
Sir, but according to third law of motion there should be two different bodies but here you had taken three bodies as the person who is pushing a block , Block A &Block B so here third law of motion will apply between person and on the Block which he/she is pushing eg. A person swimming in water So here the two different bodies are person who is swimming and water in which he is swimming so here third law of motion will apply as person will apply action on water to move it back and water will apply reaction and move the person forward Am I clear in my concept or not please reply sir
Unbalanced condition me acceleration aati h. Ye law h. Isse question ni kr skte. Isse experimentally check kr skte h. Agar results sahi aa rhe h, to ye law correct h, ni aa rhe h to galat h. Aur isse indeed results sahi aate h. Physics ke laws are like guesses to the actual laws of the working of the nature. Sahi hua, to sahi. Galat hua, to naya law guess kro. Still, isse related topic h noether's theorem. It says why conserved quantities like energy, linear momentum or angular momentum are conserved.
I ain't estimating the level of knowledge we have amongst us. But seriously, this is something which we meant to know. A simple intuition anytime in class 10-11 can easily bring this question and gets answered there itself. As a mech gate aspirant, one should be knowing this already but comments made me surprised.
wait wtf just happened at 9:56 , Yes upward forces(I:e mg +n) is equal to normal forces (also mg + n) , but how could you cancel out mg from (one side ) & n from (the other side) ....Arent they both collectively equal? for eg. lets take mg=5N and n=10N ....which would be (5+10)=(5+10) now , as like what u did, (10=5) .can anyone explain what is wrong in my intepretation/understanding.
Good evening sir Sir please help me I am in great confusion 😭😭 Sir please explain that why this phenomenon at 2:51 do not happen 🙏🙏 Plz help me if any one of you can explain it
If a bats man hit a ball which then rolls on a levelled ground. After covering a short distance the ball comes to rest . The ball slows to stop because there is a force on the ball opposing the motion . So my question is which law of NEWTON is applied in this case Sir please explain i am student of class 9th and my exams is very close
Great But correct me if I am wrong I state it as FOR AN ISOLATED SYSTEM ACTION APPLIED FROM ONE BODY TO OTHER IS EQUAL AND OPPOSITE TO REACTION BY OTHER BODY TO THE FIRST BODY.
7. Which of the following is true about action and reaction forces? A. Action and reaction forces always act on a single body. B. Action and reaction forces are the same type forces. C. A body experiences no net force because of action and reaction forces. D. Action and reaction forces have different lines of action which one is the correct answere
Sir if mg is also applied by body on centre of earth in reaction of mg applied by earth on body. So both the forces should have cancel each other then when every body is attracted towards centre of earth
Nice explanation but wanted to add one more thing that nature of forces of action reaction pair is same as mg force applied on block is gravitational force then it can have a reaction of mg(gravitation force only). Similarly N is the contact force so it's reaction pair will be a N only
sir you said that mg is acting on the block itself . but we know that the weight of the block is felt by the ground beneath . then how is the block feeling it's own weight? from what I recall it may experience a stress due to its self weight . pls correct me if I am wrong
Here, the block exerts a force due to its weight on the inclined plane . But where is the reaction force for that provided by the inclined plane. You have only told about the force of attraction with the earth?
There shouldn't be any "rigid" laws of physics, but there must be a "degree" of "rigorous" for us to make them useful. In other words, there is no such thing as "100%"... and for good reason, however, main stream science has neglected to embrace that "reason", for obvious other "reasons". A mistake would be to allow oneself to be bound by "100%". A unified theory, therefore can not be "unified" in the absolute 100% rule of "law" way of thinking. A more accurate statement, as I observe it, is thus: "For any set of circumstances to be true, is dependent upon another set of circumstances to be relatively true". Therefore the scientific mode of exploration and discovery should be a "baseline" from which to start from, not a law restricting the outcome of said exploration and discovery. We must be open, that is, we must question the idea of "impossible", else the idea of "possible" can not exist. The only "science" is the "science" that can be proven is an ignorance of the reality of "potentials" to act upon and therefore change the "science". In laymen's terms, I believe the Bible and other teachings have it right,... "The power of belief, makes all things possible"
For me, the original statement of Newton Third Laws which was the action force = the reaction force (you change it to "the force occurs in pairs") but in the opposite direction (you change it to "they act on the different bodies") is better and more clear sentence than your sentence. Provide me the appropriate generic force names since you stated that the force happens in pairs. It is not cause and effect concept. It is the concept of load and support.
At 5:00 sir but when you place a string tension and weight will act as action and reaction there is no role of normal reaction as mg is not acting force on ground. And at 6:00 mg is acting on ground and normal reaction is acting on body but sir u r telling that mg is acting on body how? please clarify.
N is not reaction of mg and it will not be always equal to mg . Body weight will act on itlself and body will apply force N on ground and ground will apply reaction N . Now for static equilbrium of body N=mg . But if string is attached then it is not true so this is very important to undestand that mg and N are not action reaction pair
I also have the same question, Imagine you have 1 block and you applied force in it like for an example 15N and we say the block also applied a force on you of 15N then why the block move? since there's a cancellation of force then i assume that it must not move right 🤕
Thanks for clearing my concept, Also the "N" you're talking of is i guess cohesive force of the material holding at that gravitational potential, i believe it can be classified certainly as electromagnetic of nature
This video should b viral so that every student has a clear idea of Newton's 3rd law of motion...
Today I have learnt Newton's 3rd law completely
And now I am able to teach it to others with deep explanation
Thanks a lot sir
Much appreciated
The thing which many people in comments didn't notice in your explanation normal force
Is due to collision in this case it is contact force keeping body in equilibrium
collision value in this case is equal to mg because it is in rest which is pair of normal force
After this lecture I am feeling very proud to my teacher who already told me about this.
Force by particle 1 on particle 2 at the same time of instant force by particle 2 on particle 1 are equal in magnitude and opposite in direction along the line joining the particles
Sir thanks a lot . I have been searching for a correct explanation since I started SHEAR FORCE & BENDING MOMENT
This was the first thing that you spoke about and i was knowing it well beforehand.
Otherwise all of your youtube videos are surprise packages.
😊😊😊😊😊😊😊😊😊
In 6:07 mg is acting to the surface and not to itself.
Please clarify
Ye sir to "next level" hai!!
How mg is acting on the box?? The box is giving mg force to the ground and the ground gives a opposite reaction which is also mg. So they act on different object
Yah....here both you mentioned are the action reaction pair
But mg and N are not.
I'm thankful that my teachers taught me so nicely. I already had a clear idea about this (I study in India only, in cbse board)
same💀💀
In the (N=mg) as both the forces are equal and opposite the total net force will be (0) and the 1st law says (if no net force acts on body) so you get the point that (N=mg) is also accurate
Just a changed oerspective
Best explanation of third law I have seen so far. Very good!
Thank you so much sir.... I am a GATE aspirant from tamilnadu... Generally in our state few people have even awareness about GATE exam and rare of them prepare hardly to crack it... In my college I ruined about 3 years with a cgpa of 9.2... But when I saw the gate level questions I even didn't understand the questions in some instances... Then I joined exergic and I was really really impressed by your way of teaching.... I don't know whether you are the best person to teach for GATE mechanical engineering in India but for me you were the best teacher I have ever met in my life.. It's really true sir...... Now successfully I have watched 95 percent of the videos uploaded in exergic and getting ready for GATE 2020 sir,,,!!!
Velmurugan N you took the video course bro?
@@wicketcricket7656 yes
Velmurugan N I’m planning to take, how’s it?
@@wicketcricket7656 yeah... I am satisfied with his teaching...
Velmurugan N thanks bro
Pls bring more such videos with the same teacher on other core concepts like Friction too!
9:52 sir that N will react on the surface because forces pair will act on dif bodies
This problem haunted me for a long time until I saw this video
Really , great explanation 👍🏻
Brilliant, i am feeling light now .
Its my doubt since since 10th and nobody ever even understood my doubt
Hello sir
Can you explain how Newton's third law is used in case of circular motion
6:18 It is also NOT happening because of the 1 law, but rather 2nd law.
2nd law is, ΣF = ma , if you put a=0, then also ΣF = 0. Then, the 1st law is derived from the 2nd law. There is no need for the 1st law, right? No. Laws in physics are not light things. Laws are not corollary of other laws. Something is not given the status of a law unless it has something very important and different to say. Then what is 1st law actually saying?
Just like the 3rd law, Newton's 1st and 2nd laws have very much confusion to it too. If you are interested, you can read further to get everything clear, I am going to explain everything from scratch.
Story starts from force.
What is force? (pause and think the answer)
Force is an interaction between two objects due to some of their properties.
The knowing of one body that the other body exist is force.
Then, we will see further, the body reacts to that knowledge that other body exists by changing its velocity, i.e. by accelerating.
Now, there are only and only 4 Forces in nature (4 fundamental forces), two of which are significant only inside the nucleus (strong and weak nuclear forces) and the other two being significant in the bigger world, i.e. Electromagnetic force and gravitational force. Naturally, we would discuss only these two bigger forces.
EM force is given by Lorentz force law, F = q(E + V×B)...(charge-charge interaction)
Gravitational force is given by , F = (GMm)/r²...(mass-mass interaction)
From these, we can infer that forces are not dependent on the reference frames.
How? Force depends on charge, mass and length. All of these are frame independent (in non-relativistic mechanics). Therefore, Force is also frame independent.
But by our knowledge of Newton's 2nd Law, ΣF = ma, we get to know that forces are dependent on reference frames. (Since acceleration is frame dependent and this law relates force with acceleration).
Therefore, there is a certain problem here.
Which one is correct? Which correctly defines forces? Fundamental forces laws or newton's second law? The answer is clearly fundamental forces laws, since they are the definition of force.
So is the Newton's 2nd law wrong? In most cases, yes. But there is a special case where it not wrong. There is a special frame of reference where this law holds correct. That frame is named inertial frame. Therefore, NSL is a conditional law.
• 1st and 2nd Law
1st law defines that special frame, the inertial frame. 1st law gives the condition for the validity of the 2nd law.
"If in a frame, ΣF = 0 (by fundamental force laws) on an obj implies a=0 of that obj, then in that frame , acceleration of any object is equal to ΣF on that obj divided by its mass, i.e. a = ΣF/m"
1st law does not say that if ΣF = 0 then a = 0. It says that in any frame where this is true, you are free to apply 2nd law from that frame.
This is precisely what 1st and 2nd laws says.
But, how are going to find that special, inertial frame of reference?
By the law, we first need to find an object on which ΣF = 0 (by fundamental force laws), then find a frame such that the acceleration of that obj wrt that frame is also zero. Then, only a force can cause an acceleration in that frame. Bingo! We have found the inertial frame.
But wait? Is this practically possible? Is it practically possible to find an obj on which ΣF = 0 ? No, it isn't. Every object is applied by an uncountable amount of forces from different celestial bodies. Not only the Earth is applying the gravitational force on us, but also the sun which keeps us revolving around it, and also other parts of the galaxy, which keeps us revolving around the blackhole at the centre of our galaxy.
Therefore, it is impossible to find an obj with zero net force.
What we do then is a very clever approximation, which I'm not going to explain here.
The results get us the practical definitions of inertial frame, which are,
1. If you are close to the earth(or any other planet) and the rotation of the earth is not talked about, then the surface of the earth is taken as the inertial frame (along with all non-accelerating frames wrt the it).
2. If you are close to the earth and rotation is also considered, then the axis of the earth is taken to be the inertial frame.
This is simple as in second case there is no contact
Reaction exit if there is action on it
But in second case not such situation
mg is given by the block on the surface and N is given by the surface on the block so I think mg and N are action reaction pair in this case....................
The normal force arises due to pauli's exclusion principle(in principle)....At microscopic level the electrons on the block tries to push the electrons on the table but it is repelled by the electrons of the table. Now matter as a whole is neutral. The electrons has distribution inside atom right. Then we try to distort the electron distribution of the atoms of the table by the electron distribution around atom of the block. But pauli's exclusion principle doesnot allow to do that. That is kind of the story with the normal force.....
Yeah, exactly. Other non fundamental forces like tension, spring, friction too arise similarly from Electromagnetic force.
sir, in 2:20 if A and B are attached, aren't they the same object . so, there should be no force acted by A on B
Thanks a lot sir !!!
I always thought if Normal force is the reaction of mg and Normal force on surface the reaction of the first normal reaction, then it would start a chain.
I discussed with many of my peers and couldn't come to a conclusion.
Then after much pondering I came to same conclusion as yours, the reaction was mg on earth's center all along.
Thank you very much sir for giving me assurance and making me feel grateful to think physics rationally. ❤
There is opposite force not an equal force.That's the meaning.Imagine the air blower of bernoulli if you apply force in the ball going up it cannot continues to going up cause downward force cause by gravity pushing too. Thats it
A great short book to understand this concept and others is "A Student's Guide to Newton's Laws" by Sanjoy Mahajan.
Best video on the concept so far
exactly😃
Exelent finally i got what i'm searching for we need such teachers to have better understanding of concepts
Very nice and short explanation.
The way I always like to see it is to consider that in reality, what happens is that objects INTER-ACT, and a force is really just the partial point of view of that interaction as seen from one of the objects. It follows from this view that, naturally, since down deep what we have is an interaction, then the partial view from one of the objects is directly, and necessarily, equal and opposite from the partial view from the other.
For example, gravity pulls objects together, period. Clearly, though I can see that pull, partially, from object A as "A-mass * g", it is necessarily the case that, from object B, that pulls is "B-mass * g" (and those with opposite direction).
Thanks 😊 you sir for providing me with the right content!!!!!🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏
Thanks, this going to helpful in my jee prep and science journey.
YOU CAN GET THIS FROM 9 HC VERMA BOOK. IF YOU WILL READ ITS THEORY PART THROUGHOUTLY.
do i need to buy the 9th class hcv edition specifically?
If A applies a force F on B then B also applies a force -F on A which is simultaneous and of same nature.
Trully surprised ✨ Amazeddd 💙💙💙 Thanks a Lot 💙
Sir my question is simple
What if both objects are coming with some magnitude of force then both forces are can be considered as action forces and reaction force of them
One doubt sir! when you try to move a block by some force the block moves but according to Newton's third law the block shouldn't move as there a equal and opposite reaction they cancel out.
Note: the force are already in pairs as 1) the force applied by you 2) the friction by your foot and ground 3) the force by the block in opposite direction 4)the friction between the block and ground
I feel very strong in concepts of physic as newtans third law is base for many concepts in physics I stroggled lot due to this.❤ And I am really happy as you made the vedio in English thank you lot.
Action And Reaction acts on Different bodies and Reaction is not neutralizing the action
Before watching this viedo i thought n and mg are pairs,but for a silly example sir said what if it a block is tied to a string then t=mg,mad i got finally reliased about 3rd law,,i am a 12th class jee student,always a bit confused for these type of hypothetical concepts and even pseudo force etc...anyways thanks for the clarity sir
Sir, or anyone who'll listen, it seems Equilibria occur in pairs as well, as forces do?
net Force on my resting body:
∑ F = -mg + N
∑ F = 0.
net Force on earth:
∑ F = +mg - N
∑ F = 0.
Light can break Newton's third law:
Wimmer, M., Regensburger, A., Bersch, C. et al. Optical diametric drive acceleration through action-reaction symmetry breaking. Nature Phys 9, 780-784 (2013). DOI: 10.1038/NPHYS2777
Sir the surface exerts a normal force on the block and the actual reaction force is the normal force exerted by the block on the table. Now if we talk about the sign convention then can the 2nd normal force be considered as negative if we consider the upward direction positive
Just amazing sir
Now i understand newton's third law
If both the bodies apply a force on one another the reaction will be the opposite forces applied or the normal reaction to the force applied by the body ?
Sir I cannot say anything...I was shocked by the concept. Thank you so much.
Sir, but according to third law of motion there should be two different bodies but here you had taken three bodies as the person who is pushing a block , Block A &Block B so here third law of motion will apply between person and on the Block which he/she is pushing
eg. A person swimming in water
So here the two different bodies are person who is swimming and water in which he is swimming so here third law of motion will apply as person will apply action on water to move it back and water will apply reaction and move the person forward
Am I clear in my concept or not please reply sir
Sir pls reply back
Sir, please ye bataie ki unbalanced condition me uniform acceleration kyu hoti hai. Uniform velocity kyu nahi hoti ??
Unbalanced condition me acceleration aati h. Ye law h. Isse question ni kr skte. Isse experimentally check kr skte h. Agar results sahi aa rhe h, to ye law correct h, ni aa rhe h to galat h. Aur isse indeed results sahi aate h. Physics ke laws are like guesses to the actual laws of the working of the nature. Sahi hua, to sahi. Galat hua, to naya law guess kro.
Still, isse related topic h noether's theorem. It says why conserved quantities like energy, linear momentum or angular momentum are conserved.
I ain't estimating the level of knowledge we have amongst us. But seriously, this is something which we meant to know. A simple intuition anytime in class 10-11 can easily bring this question and gets answered there itself. As a mech gate aspirant, one should be knowing this already but comments made me surprised.
True, I watched it and was like this is so obvious but comments made me realise I was wrong.
not everone has an exceptional intution ,genius , brilliant prereqisite like yours
Really thank you for your demonstration..... and i really understand your explanation 🙏🙏🤍
Sir on 6:10 MG Force is acting on surface and N Force is acting on object. So they act on two different bodies.
Exactly...
Areey gadhe mg gravitational force h aur normal electromagnetic force h toh dono alag alag nature ke h isiliye newton's third law nahi h vo
wait wtf just happened at 9:56 , Yes upward forces(I:e mg +n) is equal to normal forces (also mg + n) , but how could you cancel out mg from (one side ) & n from (the other side) ....Arent they both collectively equal? for eg. lets take mg=5N and n=10N ....which would be (5+10)=(5+10) now , as like what u did, (10=5) .can anyone explain what is wrong in my intepretation/understanding.
Sir plzz my this doubt that at 6:05 u are saying that mg is acting on box but i seems that mg is acting on surface?????
Good evening sir
Sir please help me I am in great confusion 😭😭
Sir please explain that why this phenomenon at 2:51 do not happen
🙏🙏 Plz help me if any one of you can explain it
Perpetual motion? That is the first thing that I thought about.
but what will happen to block in case of incline plane
Excellent 1 sir. Thnq 🙂
Thanks a lot for explaining. That's a great gap in schools physics program all over the world. And your explanation is very well.
Thank you so much sir u explain outstanding ❤😊
Sir but what about your question at 3:00.I am confused about that.Plaease answer about that
If a bats man hit a ball which then rolls on a levelled ground. After covering a short distance the ball comes to rest . The ball slows to stop because there is a force on the ball opposing the motion . So my question is which law of NEWTON is applied in this case
Sir please explain i am student of class 9th and my exams is very close
Frictionless force
No law is acting here i think so. The only force responsible for the stopiing of ball is the air resistance and friction
@@sumitnaiyaa please clear me Gravitational force is directly proportional to product of masses then why masses not consider in free fall
@@nkitydv freefall is not becoz of gravitational force its becoz of gravity. Both r different things
@@sumitnaiyaa thank you
But when we lift the block upward it try to go in downward.so I am confused 🤔🤔
Sir, i am in 11th grade althought i have flummox in 3rd law thanks for such a good explanation.😍😘😘😘😘😘
Great
But correct me if I am wrong
I state it as FOR AN ISOLATED SYSTEM ACTION APPLIED FROM ONE BODY TO OTHER IS EQUAL AND OPPOSITE TO REACTION BY OTHER BODY TO THE FIRST BODY.
Difference between contact & adhesive force???
7. Which of the following is true about action and reaction forces?
A. Action and reaction forces always act on a single body.
B. Action and reaction forces are the same type forces.
C. A body experiences no net force because of action and reaction forces.
D. Action and reaction forces have different lines of action
which one is the correct answere
B is correct
B is correct
This is video is such a lifesaver. I was stuck to a problem and took a lot time. But this video cleared it🤓
Awesome 😊👍 and great 👍👍 video
Sir if mg is also applied by body on centre of earth in reaction of mg applied by earth on body. So both the forces should have cancel each other then when every body is attracted towards centre of earth
Thank you for making it much more clearer for me!! :0
Sir i have a question"if we throw an iron ball on surface it does not follow Newton 3rd why?
Mg=N in this case so it cancel out
6:22 I think that should be 2nd law
Nice explanation but wanted to add one more thing that nature of forces of action reaction pair is same as mg force applied on block is gravitational force then it can have a reaction of mg(gravitation force only). Similarly N is the contact force so it's reaction pair will be a N only
What is the pair of normal reaction in 8:59
Why it hasn't million of views. Thanks so much sir ❤❤🙏
sir you said that mg is acting on the block itself . but we know that the weight of the block is felt by the ground beneath . then how is the block feeling it's own weight? from what I recall it may experience a stress due to its self weight .
pls correct me if I am wrong
May you make a video of force pairs involved in the movement of your arm through air?
excellent explanation
Here, the block exerts a force due to its weight on the inclined plane . But where is the reaction force for that provided by the inclined plane. You have only told about the force of attraction with the earth?
THANK YOU!! Great explanation and correct!!
Can u please explain the example of horse and cart
50 k congratulations sir.
Thank you.
Although we are never focused on gaining subscribers but it definitely is a landmark. :)
Sir if every action has an (equal)and opposite reaction where force acts in pairs and in different bodies how work can be done
❤❤ty , this is just what i truly needed and wanted to see
This is a very fundamental concepts clearly mentioned in ncert class XI text book but students usually don't read ncert properly
There shouldn't be any "rigid" laws of physics, but there must be a "degree" of "rigorous" for us to make them useful. In other words, there is no such thing as "100%"... and for good reason, however, main stream science has neglected to embrace that "reason", for obvious other "reasons". A mistake would be to allow oneself to be bound by "100%". A unified theory, therefore can not be "unified" in the absolute 100% rule of "law" way of thinking. A more accurate statement, as I observe it, is thus: "For any set of circumstances to be true, is dependent upon another set of circumstances to be relatively true". Therefore the scientific mode of exploration and discovery should be a "baseline" from which to start from, not a law restricting the outcome of said exploration and discovery. We must be open, that is, we must question the idea of "impossible", else the idea of "possible" can not exist. The only "science" is the "science" that can be proven is an ignorance of the reality of "potentials" to act upon and therefore change the "science". In laymen's terms, I believe the Bible and other teachings have it right,... "The power of belief, makes all things possible"
For me, the original statement of Newton Third Laws which was the action force = the reaction force (you change it to "the force occurs in pairs") but in the opposite direction (you change it to "they act on the different bodies") is better and more clear sentence than your sentence. Provide me the appropriate generic force names since you stated that the force happens in pairs. It is not cause and effect concept. It is the concept of load and support.
It's too great u have explained it very well
Thank you sir , your explanation is too helpful for me
Sir I like your explanation
How he explains such topics easily?
Sir, what will be the net force of action and reaction forces? Is it balanced or unbalanced?
It is balanced with no net force
This statement is meaningless. We calculate net force acting on the "same" body. Not different bodies.
At 5:00 sir but when you place a string tension and weight will act as action and reaction there is no role of normal reaction as mg is not acting force on ground.
And at 6:00 mg is acting on ground and normal reaction is acting on body but sir u r telling that mg is acting on body how? please clarify.
N is not reaction of mg and it will not be always equal to mg . Body weight will act on itlself and body will apply force N on ground and ground will apply reaction N . Now for static equilbrium of body N=mg . But if string is attached then it is not true so this is very important to undestand that mg and N are not action reaction pair
Mg body pe hi toh act karega na kyu ki earth bhi toh mg se hi kheech raha h lavduuuu
Ur right but two objects can't be taken as pair,if call A and B wil also come that is pair so tabe and objects are not pair
Sir if the there is equal and opposite reaction then why do we weight ?
I also have the same question, Imagine you have 1 block and you applied force in it like for an example 15N and we say the block also applied a force on you of 15N then why the block move? since there's a cancellation of force then i assume that it must not move right 🤕
Thanks for clearing my concept, Also the "N" you're talking of is i guess cohesive force of the material holding at that gravitational potential, i believe it can be classified certainly as electromagnetic of nature
Excellent explanation sir! Subscribed!
Sir why we feel weight because of action or reaction pair
We like your video
Sir your explanation expression and speaking type are similar to my english teacher