✍ Register yourself for ANTHE here: ⬇ Link byjus.com/aakash-byjus-anthe22/?BY_youtube_organic_9-10&Fzzj7YBZgmk&BY_9-10_Description 🔷 BYJU's Mini learning Program is now FREE 🤩 for the first 500 users go for it!!! Use Code- YTFIRST⬇ shop.byjus.com/products/byju-s-classes-online-tuitions-class-4-10-introductory-pack-3-sessions?Fzzj7YBZgmk&
Hey byjus this is me priya from tamilnadu. Your byjus team is teaching very great than other TH-cam channels, especially saurabh sir is teaching very great even this chapter Is an very tricky chapter but very well . I'm very appreciate able to every teachers from byjus team and also It's a very kind request that please take the class in pure English bcz I'm not an hindi native so literally won't able understand the class so it's an very kind request and if the teacher from byjus team had taken the every classes in pure english it will be very helpfull for the students like me those who don't understand the hindi will be very helpfulland if the byjus team had replied and fulfilled will be very great full to byjus team.
Byjus team is doing great job There is request don't take comments in between it disturb the class and break the rhythm. You can have comments session in last
Thank you sir for this video and it is useful for preparing for class test. A kind request sir . Can you please teach in pure english ? Because i am not a native north indian and I am from Tamil Nadu. So other than that your videos are superb sir....
Hey bujus I'm charishma ,from Andhra pradesh I've been following your channel from 6th grade and loving the way you're teaching 😀 and subscribed to your channel THANK YOU, Saurab sir 🙏😁
Sir when we apply force on a cart it moves in the direction of the applied force which means positive work done and hence it gains energy and the frictional force is also applied on the cart to oppose it's motion but it still moves in the opposite direction of the applied frictional force that is negative work done so is it losing energy at the same time ? Please answer my question 🙏
Sir please speak in English I don't know Hindi Please sir in next video speak in English which may be more easier to understand for people like me and may be other Tamil and other language students
Hats off to the byjus team they Make such a beautiful presentation for us to understand every concept easily keep doing it and one request is please make a video on sound i hope you will read my comment
Hey byjus i am shubh kanojia. This app is literally good ❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤ byjus is very good app for study's
Byju's has been helping now and then. But I also wish for more clear classes and some deep explanation rather than just clarifying doubts written in chat. Saurabh sir did an amazing job teaching this chapter with an ease. Thank you Byju's
Sir aap bhut acha phadate ho Or dout crystal clear karte Sir aap ka sath padh ne ma lag ta hi nahi ha ki kab ham ne phad liya or kab ham ne sikh liya Thankyou so much sir💖💖
Sir, As work means that force and displacement in a body. And energy means the capability of doing work. Then what work does the sound do that we call it as energy. Is the vibration of particles in its mechanism makes it say as energy??? Plz answer to this sir.
Hello sir. Im Syed studying in Class 9 . Truly, I got to understand the chapter by your explanation. The experience was very much good and your way to teach is very good . But I had a doubt that , how to find the energies in anything sir . Sir please reply me. Once again thank you very much sir
Sir i have a doubt that what if someone is applying force on an earth and the earth ismoving but not because of the person's force so will we say that the person is doing work
Hello Vaishnav, Check out the below link for the session "Why Do We Fall ill Class 9 Complete Revision (Chapter 13) | CBSE Class 9 Science (Term-2) Exams" - th-cam.com/video/BU4iegMXWCw/w-d-xo.html
A porter lifts a luggage of 15 kg from the ground and puts on his head 1.5 m above the ground. Calculate the work done by him on the luggage. please solve this question sir ji 🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏
@@shifaahmad2580 but why we take g as the acceleration . If we take g as the acceleration the then there should not be any displacement because Earth's gravity will also apply acceleration g so there shouldn't be any displacement
@@Arnav_ffgw but why we take g as the acceleration . If we take g as the acceleration the then there should not be any displacement because Earth's gravity will also apply acceleration g so there shouldn't be any displacement
Hey @rakshit, this is a very genuine doubt. Why do we take g as 9.8 m/s sq as this would mean net force on the body to be zero. There is a very basic underlying assumption here that the body has moved with almost zero velocity. This assumption let's you find the minimum work done in such a case. I'll talk more about this in the upcoming lecture. Btw thanks everyone who tried to answer this doubt of Rakshit. Keep leaning guys :)
No, the energy used to perform a certain work stays the same, that is, the total energy before doing the work and after doing the work stays the same on both the objects..for example, take while kicking a football, you and the football have a total of x amount of energy, say your kinetic energy while moving is y and the stationary potential energy is z in the ball. Now, x=y+z And after kicking the ball, you transfer kinetic energy to the ball and your kinetic energy is restored back to zero, i.e, you are full of potential energy and the kicked ball is full of kinetic energy.. so after kicking it still stays x=y+z but just the type of energy is transmitted between two bodies. Hope I helped!😅
This is very good as compared to the premium one why are you not like this teacher in premium i am taking the premium byjus also I feel this is excellent as compared to premium
sir i have a doubt? . . . what is firing of a bullet considered as negative force or positive force?? and . . . can hitting a punching bag be considered as negative force??
Hi @Sahej and @vedika. I'll do Gravitation again but I want to give you a better feel of the chapter with some smaller experiments and concept videos before doing another one shot of the chapter. Have patience....... You'll fall in love with this chapter very soon :)
@@saurabhshukla3584 I didn't agree on the way he(@saihej) asked but subject he asked for,from me it was a humble request and same from you was a humble reply 😘 thankyou sir it means lot to us and we know you whatever commit you stick to it and do it(＾∇＾)♥️
✍ Register yourself for ANTHE here:
⬇ Link
byjus.com/aakash-byjus-anthe22/?BY_youtube_organic_9-10&Fzzj7YBZgmk&BY_9-10_Description
🔷 BYJU's Mini learning Program is now FREE 🤩 for the first 500 users go for it!!!
Use Code- YTFIRST⬇
shop.byjus.com/products/byju-s-classes-online-tuitions-class-4-10-introductory-pack-3-sessions?Fzzj7YBZgmk&
Sir class 9 ka online aur offline price kitna hai please reply dijiye sir mujhe 9 class mai admission lena hai to please reply kare
1:10:00 sir, I think this can be in lil easier way
1J = 1N × 1m ( SI system)
1J = 10⁵ dyne ×10² cm (CGS system)
1 Joule = 10⁷ erg
(dyne ×cm= erg)
Best physics teacher i have seen ever.....Sir really you don't teach physics,you just play with it ❣️🤞✨
Hey byjus this is me priya from tamilnadu. Your byjus team is teaching very great than other TH-cam channels, especially saurabh sir is teaching very great even this chapter Is an very tricky chapter but very well . I'm very appreciate able to every teachers from byjus team and also It's a very kind request that please take the class in pure English bcz I'm not an hindi native so literally won't able understand the class so it's an very kind request and if the teacher from byjus team had taken the every classes in pure english it will be very helpfull for the students like me those who don't understand the hindi will be very helpfulland if the byjus team had replied and fulfilled will be very great full to byjus team.
Hey Priya, We are so glad to know this, Thanks for Sharing your thoughts😊
Hat
Tujhe apni matr bhasha ni samajh ati
We are indians
We should know about our national language
@@PrithviBhaviShotDear India has no national language ( as each state have different language)we have only official language
Byjus team is doing great job
There is request don't take comments in between it disturb the class and break the rhythm. You can have comments session in last
Thank you sir for this video and it is useful for preparing for class test. A kind request sir . Can you please teach in pure english ? Because i am not a native north indian and I am from Tamil Nadu. So other than that your videos are superb sir....
VIDEO STARTS AT 7:18
Thanks bro
Thanks broooo
Found out the hard way
appreciate it
Hey bujus I'm charishma ,from Andhra pradesh I've been following your channel from 6th grade and loving the way you're teaching 😀 and subscribed to your channel
THANK YOU,
Saurab sir 🙏😁
Like always , amazing session sir , pls do update us with questions of this chapter whenever convenient.....
Glad you liked it, Keep Watching!
Energy starts from 44:13
So earth's gravitational energy will also increase 53:47
.
Me who does work while studying because I always roam will studing so there is displacement and I am holding the book so there is force...😂
Great explanation.!!!!! Heads off to Saurabh Sir..✨✨
I enjoyed every minute of your session as well as your marvelous sense of humor.!!!
Sir when we apply force on a cart it moves in the direction of the applied force which means positive work done and hence it gains energy and the frictional force is also applied on the cart to oppose it's motion but it still moves in the opposite direction of the applied frictional force that is negative work done so is it losing energy at the same time ?
Please answer my question 🙏
Not really
Sir please speak in English
I don't know Hindi
Please sir in next video speak in English which may be more easier to understand for people like me and may be other Tamil and other language students
QUESTION : if our body loses energy in a positive work done so what did the object do with that energy basically here did the energy go?
The energy is stored as potential energy
sir what if you're applying force but not moving? 51:39
Hats off to the byjus team they Make such a beautiful presentation for us to understand every concept easily keep doing it and one request is please make a video on sound i hope you will read my comment
Thanks Vanshita, We will definitely come up with such session for you, Keep Watching😊
Hey byjus i am shubh kanojia. This app is literally good ❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤ byjus is very good app for study's
Thanks sir fpr providing us such video and explanation . It will help us in gutirey thanks you soo much saurabh sir ❤❤
Byju's has been helping now and then. But I also wish for more clear classes and some deep explanation rather than just clarifying doubts written in chat. Saurabh sir did an amazing job teaching this chapter with an ease. Thank you Byju's
Answer negative
Nice explanation 👌 thanks a lot byju's team
Hello Anmol, Stay tuned to our Channel for more Amazing sessions👍🏻
Sir aap bhut acha phadate ho
Or dout crystal clear karte
Sir aap ka sath padh ne ma lag ta hi nahi ha ki kab ham ne phad liya or kab ham ne sikh liya
Thankyou so much sir💖💖
You are teaching marvelous, can't express in words and thank you sir🎉🎉🎉🎉🎉
12:15
Hata off sir your way of explaining things ✨🔥💯
It was a very great session!!
Hello Sai, Stay tuned to our Channel for further updates on upcoming Amazing Sessions 😊
An Object of mass 15 kg is moving with a uniform velocity of 4 ms-4 what is the kinetic energy possessed by the Object?
120j
120J as kinetic energy is 1/2mv^2
Best explanation
He explain the key points very wonderfully
B
Sir, As work means that force and displacement in a body. And energy means the capability of doing work. Then what work does the sound do that we call it as energy. Is the vibration of particles in its mechanism makes it say as energy???
Plz answer to this sir.
yes, the mechanical waves work in order for our ears to hear. This makes 'sound' a form of energy
work done by electrostaic force and magnetic force
it is very good TH-cam channel for education
Hai Kalpesh, Happy to hear that, Keep Watching and Keep Learning😊
Displacent final initial position distance
Have body will have mechanical energy if the momentum is zero?
Yes
Sir work = negative
It depends on surface.
Thank you byjus especially saurabh sir for completing this chapter
Most welcome Anamika, Keep Watching and Keep Learning😊
Hi
Hello sir. Im Syed studying in Class 9 . Truly, I got to understand the chapter by your explanation. The experience was very much good and your way to teach is very good . But I had a doubt that , how to find the energies in anything sir . Sir please reply me. Once again thank you very much sir
If the values are given u solve it
PE=mgh
KE=1/2mv^2
.acricketer throws ball in the same direction of batter
Very great news!My parents agreed to join byjus🎉😂I am so happy.❤
Sir i have a doubt that what if someone is applying force on an earth and the earth ismoving but not because of the person's force so will we say that the person is doing work
.
Sirpls tell
.
No the displacement must happen by the force applied to call it as work done
Explanation is soo good ..👍
Thank you sir for this amazing session ☺️☺️
Hey Fahima, Glad you liked it, Keep Watching for more amazing sessions😊
Hello
Good evening
Sir
Hello
I want Why do we fall ill class 9th biology one shot session
Hello Vaishnav, Check out the below link for the session "Why Do We Fall ill Class 9 Complete Revision (Chapter 13) | CBSE Class 9 Science (Term-2) Exams" - th-cam.com/video/BU4iegMXWCw/w-d-xo.html
Yes
Please start teaching computer as well. As we are students of cbse board computer is also an important subject for students.
Sir, Please upload a video on derivation of Formula of K. E. i.e. (1/2 )mv²
It very simple
Hello sir
What will be the kinetic energy in space?
Please share pdf of this session on telegram
This is very easy chapter
Sir but why is there not kinetic energy in marker because it got moved from ground to a height??? Pls clear.🙏🏼🙏🏼
Marker is raised to height by a force the marker is not moving by itself
So the energy in a marker is not used but stored in the form of potential energy
Thank you sir
sir what is erg
Cgs unit of dyne
Good morning sir
When the object gains energy then it moves
This session is very helpful
Hi
Yes sir the work is done but this science manta hai ki wo work nhi kar yaha hai
A porter lifts a luggage of 15
kg from the ground and puts on his head 1.5 m above the ground. Calculate the work done by him on the luggage.
please solve this question sir ji
🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏
According to the formula
W=mgh
Work done =15×9.8×1.5=220.5 J
Therefore, the Work done will be 220.5 J.
@@shifaahmad2580 but why we take g as the acceleration . If we take g as the acceleration the then there should not be any displacement because Earth's gravity will also apply acceleration g so there shouldn't be any displacement
@@Arnav_ffgw but why we take g as the acceleration . If we take g as the acceleration the then there should not be any displacement because Earth's gravity will also apply acceleration g so there shouldn't be any displacement
Hey @rakshit, this is a very genuine doubt. Why do we take g as 9.8 m/s sq as this would mean net force on the body to be zero. There is a very basic underlying assumption here that the body has moved with almost zero velocity. This assumption let's you find the minimum work done in such a case. I'll talk more about this in the upcoming lecture.
Btw thanks everyone who tried to answer this doubt of Rakshit. Keep leaning guys :)
Is Kinetic Energy equal to Potential Energy
No, the energy used to perform a certain work stays the same, that is, the total energy before doing the work and after doing the work stays the same on both the objects..for example, take while kicking a football, you and the football have a total of x amount of energy, say your kinetic energy while moving is y and the stationary potential energy is z in the ball.
Now,
x=y+z
And after kicking the ball, you transfer kinetic energy to the ball and your kinetic energy is restored back to zero, i.e, you are full of potential energy and the kicked ball is full of kinetic energy.. so after kicking it still stays x=y+z but just the type of energy is transmitted between two bodies.
Hope I helped!😅
It is not equal but total energy at any point is same
Sir why both work and energy same same SI unit
Why both work and energy have same si unit dont understood ?
Sir animation improve karo rg bucket list jaisa banao na
Aap to timepass karte ho
Bilkol bhi accha nahi padhate ho
What do we need to do work
If you dont, you will get obese 😂😂😂😂😂😂
**** you byjus. We love you 💜
Moving
Hiii
When we will get the explanation of floatation chapter???
Sir English..
Hlo
?
Sir i have doubt
What is the unit of kWh
Kwh in itself is the unit as in 1kwh like that
Bro teach in intrestfully don't just read the sentence make us to understand the thing which you are teaching don't just do timepass okk😅😅😅😅😅
English please
Iam from South India I can't understand Hindi well
Sir
sir can u pleas use english pleas sir
My name is Anchal
This is very good as compared to the premium one why are you not like this teacher in premium i am taking the premium byjus also I feel this is excellent as compared to premium
Two teachers advantage ,is just for name only the mentor is teaching n that also not excellent as this sir
Good evening
Good evening!
Hello
👍
sir what is crg and egs
Erg is cgs of dyne
Cgs is CM gm sec
sir i have a doubt?
.
.
.
what is firing of a bullet considered as negative force or positive force?? and
.
.
.
can hitting a punching bag be considered as negative force??
pls reply!!!
Both questions it is positive work
Sir i whant notes
sir would you use pure English please
sir aap live class kab lete ho time kya
Hello sir I am harini from Tamil nadu
You teach is very good and I can understand sir
Thank you 👍👍
I am weak in physics 😢😢
Continue
? The session is already finished...
No
Pls take everything in englishhh
Please don't read live chat I t distract me
.
Sir commercial unit of energy to padaya hi nhi aapne
Sir pls teach in English
😁
No sir
hi my name is krishna soni
Okay? Nobody wanted to know your name...
Sir u told in the GRAVITATION chapter that u will do this chapter again but u didn't 😫
Yes I too agree
Hi @Sahej and @vedika. I'll do Gravitation again but I want to give you a better feel of the chapter with some smaller experiments and concept videos before doing another one shot of the chapter. Have patience....... You'll fall in love with this chapter very soon :)
@@saurabhshukla3584 I didn't agree on the way he(@saihej) asked but subject he asked for,from me it was a humble request and same from you was a humble reply 😘 thankyou sir it means lot to us and we know you whatever commit you stick to it and do it(＾∇＾)♥️
@@vedika7558 I am a girl Vedika
@@saurabhshukla3584 ok sir thanks for your reply
..
Sir apne toh sara vakt hii hlo karte hi nikal diya ...pdhaya kya ,--😂adha adhura...
U r explaining now also 😅
Your class is preety but i do,t andarstand your numericlas😂😂😂 pl hep me 😂
ask @BYJU'S