📝Download Lecture Notes From PhysicsWallah App : bit.ly/2SHIPW6 🎯 Science group- t.me/joinchat/RYszj_1cAl8xEvnv 🎯 Social Science- t.me/joinchat/GCBE5bDgFdxrZeI8 🎯 Mathematics group- t.me/joinchat/GBbG4p5S_OVRV920 ----------------------------------------------------------------------------- 🗓️ Scheduled Syllabus For Sprint ( Class 9th ) released describing which topics will be taught for how many days. Available at PhysicsWallah App :bit.ly/2SHIPW6 •Duration:-1 month (Jan 2021 - Feb 2021) 🎉 Free Batch Exclusive on our RUclips Channel : Physics Wallah Foundation - 9 & 10 •Batch Details : 1) Best Faculties across India for different Subject/Topics. 2) Complete & Relevant Syllabus Coverage of Class 9th within 1 Month - Fastrack January 4,2021- February 15,2021 3) Monday - Saturday : Scheduled Classes everyday. •Physics : Tuesday, Saturday •Chemistry : Wednesday , Friday •Mathematics : Monday, Wednesday, Friday •Biology : Wednesday , Thursday , Saturday •S.ST : Tuesday, Thursday, Saturday, Sunday 4) Scheduled Syllabus released describing which topics will be taught for how many days. Available at PhysicsWallah App :bit.ly/2SHIPW6 ----------------------------------------------------------------------------- OUR SOCIAL MEDIA PROFILES : ⭐Instagram Handle : instagram.com/physicswallah/ ⭐Facebook Page: facebook.com/physicswallah ⭐Twitter Account : twitter.com/PhysicswallahAP?s=20 ⭐ PW App on Google Play Store : bit.ly/2SHIPW6 ❤️ Padhai Karte Rahe, All The Very Best 👍
Newtons 4th law of motion :- A book remains in the state of rest and covered with dust until and unless internal and external exams appeared and then the speed of turning pages is directly proportional to the syllabus covered and the tension in the mind remains constant
@@18-kamyapatelviii-c79 sorry but don't say anything wrong about isaac Newton or any other scientist he struggle very hard for that law you can't imagine.
Answer of challenger: a)F gets doubled when mass of one object is doubled. b)F becomes 1/4 of previous force when doubled. F becomes 1/9 of previous force when tripled. c)F becomes 4 times of previous force when masses of both bodies are doubled. LOVED THE SESSION!
Homework questions - Q.1) force of attraction becomes double of the previous force. Q.2) force of attraction becomes 1/4th of the previous force(when distance is doubled) and force of attraction becomes 1/9th of the previous force(when distance is tripled). Q.3) force of attraction becomes 4 times of the previous force. Thank you sir for this wonderful session😊 Love you sir ❤
Challenger questions: 1) Force will be doubled 2) If distance is doubled, force = F/4 If distance is tripled, force = F/9 3) Force will be 4 times the initial force Amazing lecture!❤
I like the Teaching as You explain in Hindi...Students know English Very Well but still we catch Concept more Readily While Learning In Hindi...That's Why I like This Foundation more Than Bhedantu and Gunacademy...
(i) F'= 2F (ii)If distance are doubled F'=1/4F. If distance are tripled F'=1/9rF (iii)F'=4F Answers of the homework questions.Thanks sir for the best explanation.My all doubts are clear in this video.🙏🙏🙏🙏🙏
challenger questions:- 1.ans= The force between two objects is also doubled, if one of it doubled. 2.ans= If the distance between two objects doubled and tripled, so the force between two objects is decreases. 3.ans= if the masses between two objects are doubled so the force also increases. Great Lecture!!!!
This was my first youtube lecture of physics wallah foundation and I love it. Thank you sir for making this amazing video and make us understand this concept.
i have a doubt, That how can you say that if earth attracts moon with a force than the moon attracts the earth with the same force because more will be the mass more will be the force
@@raoyadav7635 Bruh, when you talk about Gravitational Force, you have the formula F=Gm1m2/r². Basically m1 and m2 are the masses of the two objects b/w which you are finding the gravitational force, so be it Force on earth due to moon or on moon due to earth, it will remain the same. If we talk about the direction, then both the forces act on the opposite bodies. As the mass of moon is less than that of earth, we can see the impact only on moon, but in reality both of them attract each other.
*Challenger Questions -:* Q. What happens to the force between two objects, if 1) the mass of one object is doubled ? *Sol-:* F = G×M1×M2/r².....(1) F⁰= G×M1× 2M2/r².......(2) Dividing eqⁿ 2 by 1 . Then, F⁰/F = G×M1×2M2/r² ÷ G×M1×M2/r² F⁰/F = 2/1 F⁰= 2F The force will be twice if the mass of one object will doubled. 2) (I) the distance between the object is doubled. *Sol-:* F= G×MI×M2/r².......(1) F⁰= G×M1×M2/4r².......(2) Dividing eqⁿ 2 by 1.Then, F⁰/F = G×M1×M2/4r² ÷ G×M1×M2/r² F⁰/F = 1/4 F⁰ = F/4 The first become one fourth if it's distance doubled. (II) the distance between the object is tripled. *Sol-:* F=G×M1×M2/r².....(1) F⁰=G×M1×M2/9r²........(2) Dividing eqⁿ (2) by (1).Then, F⁰/F = G×M1×M2/9r² ÷ G×M1×M2/r² F⁰/F = 1/9 F⁰= F/9 The force will be one-ninth if the distance will tripled. 3) the masses of both objects are doubled? *Sol-:* F = G×M1×M2/r².........(1) F⁰= G×2×M1×2×M2/r²......(2) Dividing eqⁿ (2) by (1).Then, F⁰/F = G×2×M1×2×M2/r2 ÷ G×M1×M2/r² F⁰/F = 4/1 F⁰ = 4F The force will be 4 times if the mass of both two objects are doubled. Hope ! This is correct 🥰🥰🥰🥰.
@@Gamma_plays you will know when you will read the chapter atoms and molecules. In that chapter the mass of gases(air) are given . Hence we know that air have mass and sir had told that anything that have mass have gravity.
According to Newton's second law of motion, the force acting on an object is equal to its mass multiplied by its acceleration (F=ma). Therefore, if the mass of one object is double, the force between the two objects will also double.
Challanger Question Ans. 1) Force will be twice 2)Force will be (i)1/4 of previous value...(ii) 1/9 of previous value.. 3)Force will be 4 times..... Thank you sir for great explaination😊😊
44:02 # Challenges question (I) The force will become doubled (2) A) when doubled force will become 4 times (2)B) when tripled force will become 9 times (3) The force will become 4 times Thank 🙏🙏you sir
Thanku so much sir.. You have great teaching style..🤗🙂🙂 I was dull in physics but because of you now I love physics and I have decided to take PCM after 10th..🤠🤠
Challenger questions 44:03 Q1 I) Force will become 2 times greater than previous Force II) Forced will become F/4 and F/9 times III) force will become 4 times greater
Thank you very very very very very very very very very much❤ sir. Guru ji apke jesa teacher 👩🏫 agar sabko mil jaye toh sab scientist 👨🔬 ban jaye ga 24:35 🎉🎉🎉🎉❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤Physics is easy 😎❤❤❤❤❤🎉🎉🎉🎉🎉🎉
11:45 1)moon revolve because of earth 2)Eart because of sun 3)Sun (soler system) because of supermassive black hole in center of gallexy 4)and gallexy because of center of the mass of gallexy cluster
I like the teacher as you explain in hindi ...... study know English very well but still we catch concept more readily while learning in hindi ... that's why l like This foundation more than Bhedan ❤❤❤❤❤❤😮😮😮
Yes sir air also have gravitation even an all the partical has the gravitational force between them and sir that's why radon is heaviest gas so it is at the lowest level of the ground and hydrogen is the lightest so it is at the top.
Sir Hume school me samjaya nahi, sirf ratta marvaya jata hai . Mam ko verbally Hindi me answer do to bolti hai English mein chahiye .sir pehle mujhe physics se nafrat thi lekin jab se aap padhate ho tab se physics mujhe pasand aane lagi Sir physics wallah ko apni ek school khol leni chahiye jaha pe bacho ko robot jaisa nahi insano jaisa treat Kiya jaye
36:11 , when 6.4 and 6.7 were canceled, all that's left is 60/6.4, which comes out to be 9.3, not 9.8, so that cancellation can't be done in the exam and the whole tedious calculation is required.
My answer for this question is coming 6.25 x 10^7 as I took the value of G as 6.67 x 10^-11.. I think their is some mistake in the calculation that sir did. I even rechecked my answer but it was coming same. Pls try it once by putting G=6.67 x 10^-11 and let me know the answer..
3:06 newton was sitting in his home and watched the tree of apple and a apple fall from tree. Newton thought that why this apple fall only downside, why it's not going upside or in any other direction. Then he discovered the *GRAVITY* . This was written in his *DOCUMENTARY* .
Bhai log tum sahi keh rahe ho sirf apple girne se koi itni badi discovery nahi kar sakta iske peeche bahut saalon ki mehnat hai nahi to hum bhi patang ko udhta dekhke **upravity** bana dete
Challenger questions: 1) Force will be doubled 2) If distance is doubled, force = F/4 If distance is tripled, force = F/9 3) Force will be 4 times the previous force. Amazing lecture!
Challenger question answers 1) If one of the masses is doubled then the force will double. 2) If the distance is doubled the the force will become half and if the distance is tripled then the force will be one-third. 3) If the masses are doubled(both the masses) then the force will be quadrupled.
Sir you can't ever know your place in my heart ❤️❤️.. sir you are the my best teacher ...... I am studying in Jawahar navodaya vidyalaya.. but there are no teacher has skill like you .. hat's off to you sir...
44:00 (1) the force becomes 2 times when the mass of one object is doubled (2)the force becomes one-forth times when the distance between doubled and the force becomes one - ninth times when distance between object is tripled. (3) the force becomes 4 times when the mass of both object is doubled. 😊
@@sufferesthumanbeing1926 no it is not tricky you can also learn the 2 answer in another way that is the force becomes 4 times less when distance between both of object will double
Best teaching ever I had seen ; before some months when I hadn't found this channel I was very weak in physics but now I had got full marks in physics due to PHYSICS WALLAH platform ...A very special thanks to ALAKH SIR and PHYSICS WALLAH TEAM •••.
*🧐DOUBT⁉️⬇️* As the universal law of gravitation says that it directly depends on the masses it implies that a man of mass 60 kg will get more attracted towards earth than a boy of mass 25 kg ? (Answer If You Know)⬇️
@@pranavpratik. Both will be attracted toward the earth at the same speed as their air resistance present on the earth so it cannot be possible on the earth but if we make a vacuum then we can prove this experiment.
@@pranavpratik. both will be attracted with different speeds heavier man will be attracted faster compared to the lighter man....but in case of vacuum , law of gravitation won't apply, so the speed will be same for both the heavy and the light man
@@MrAtif-sk1hj sorry check your answer on earth air resistance is different at different places depending on relief features, air molecules, water molecules, clouds, density and other particles such as dust particles !!
2. If the distance between them is double then the force becomes 1/4 of the previous force . And if the distance between them is triple then the force becomes 1/9 of the previous force.
Question 1)- a)- the force is doubled. b)- force becomes 1/4 when radius between the object is doubled and becomes 1/9 when tripled. c)- the force is quadrupled.
Challenger question answers:- 1) Force will become 2 times of initial force. 2) when the distance b/w two objects is doubled than force will become 1/4th of its initial value and when it is tripled it will become 1/9th of its initial value. 3) force will become 4times when masses of both the objects are doubled. & Air also has gravity because it has mass.
8:36 Because air has mass, Earth’s gravity attracts it and gives it weight. Because it has weight, and the air molecules are constantly bumping into things, it exerts pressure.
Challenge question 1. If the mass of the object is doubled then the ans is F'=2xF 2. The distance when doubled then the ans is F'=1/4xF The distance when tripled then the ans is F'=1/9xF 3. If the masses of both the object increases the ans is F'=4xF
Challenger question: 1. Let, Mass of 1 object be doubled=2M New force =G ×2Mm/d² =2×old force If the mass of one object is double the foce is also doubled. 2.If the distance is doubled, distance=2d Then, F=GMm/(2d)² =GMm/4r² =1/4×old force When the distance is doubled the force becomes 1/4 times of the old. 3. if the distance is tripled, distance =3d Then, F=GMm/(3d)² =GMm/9d² =1/9 ×old force When the distance is tripled the force becomes 1/9 times of old force.
Sir physics wallah ko apni ek school khol leni chahiye jaha pe bacho ko robot jaisa nahi ,insano jaisa treat Kiya jaye, ratta nahi samjhaya jaye Please sir alakh sir ko schools kholne ka idea zaroor dijiye Aur pune mein khaskar kholna near Hadapsar
📝Download Lecture Notes From PhysicsWallah App : bit.ly/2SHIPW6
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•Physics : Tuesday, Saturday
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❤️ Padhai Karte Rahe, All The Very Best 👍
Lol
Sir Challenger question ka answer hai step by step:
1:F'=2F.
2(i):F=F'/4 and 2(ii):F=F'/9.
3:F=4F'.
Sir live study kara do please 🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏
@@himanshuyadav1247 menti sangram coming on 14 aug @6pm sur would live and team rakshak sir would win!!!
@@himanshuyadav1247bhai. Sahab MATLAB kya he apka
Newtons 4th law of motion :-
A book remains in the state of rest and covered with dust until and unless internal and external exams appeared and then the speed of turning pages is directly proportional to the syllabus covered and the tension in the mind remains constant
Wah kitne tejaswi log hai yaha pe
This law is better than Newton's law.
Aj ke newton bro tumhe toh apple girne time rehna chahiye tha newton ki jagah toh to mein soch bhi nahi sakti kaise kaise law bante 🤣
@@18-kamyapatelviii-c79 sorry but don't say anything wrong about isaac Newton or any other scientist he struggle very hard for that law you can't imagine.
@@tansviutane3054 Oh I am not saying this is wrong but in new edition of class 9 science there it is written.And sorry if you didn't got me.
Sir's pen is the best example of every chapter 😂
🤣🤣😂😂
😂😂😂😜
🤣🤣🤣
Sir give best examples with pen
Adbhut
Answer of challenger:
a)F gets doubled when mass of one object is doubled.
b)F becomes 1/4 of previous force when doubled.
F becomes 1/9 of previous force when tripled.
c)F becomes 4 times of previous force when masses of both bodies are doubled.
LOVED THE SESSION!
Right
I think these Q are quite easy.
a
Same answer corrct
Right bro but I did it orally
😀
Homework questions -
Q.1) force of attraction becomes double of the previous force.
Q.2) force of attraction becomes 1/4th of the previous force(when distance is doubled) and force of attraction becomes 1/9th of the previous force(when distance is tripled).
Q.3) force of attraction becomes 4 times of the previous force.
Thank you sir for this wonderful session😊
Love you sir ❤
Same answer thanks😊
air also has gravity as particles present in air have mass and every object which has its own mass has gravity too👍
Edited
Challenger questions:
1) Force will be doubled
2) If distance is doubled, force = F/4
If distance is tripled, force = F/9
3) Force will be 4 times the initial force
Amazing lecture!❤
Exactly write answers
Bro kaise banaya batana jara
Mere ko bhi Janna hai
What is friction
Please full solution type kar do , your answer is double and my answer is 4 times , how
I like the Teaching as You explain in Hindi...Students know English Very Well but still we catch Concept more Readily While Learning In Hindi...That's Why I like This Foundation more Than Bhedantu and Gunacademy...
V'n!n;mm;m
🤣🤣🤣🤣🤣gunacademy and bhedantu
Bhi tu free fire khelte he ky
😂 op
Hiii bro
(i) F'= 2F
(ii)If distance are doubled
F'=1/4F.
If distance are tripled
F'=1/9rF
(iii)F'=4F
Answers of the homework questions.Thanks sir for the best explanation.My all doubts are clear in this video.🙏🙏🙏🙏🙏
challenger questions:-
1.ans= The force between two objects is also doubled, if one of it doubled.
2.ans= If the distance between two objects doubled and tripled, so the force between two objects is decreases.
3.ans= if the masses between two objects are doubled so the force also increases.
Great Lecture!!!!
Wah dear Badi intelligent ho ❤
Sir I want you as my teacher in our school for physics
@@anandpatel3192 gajab 😂👌
Kuchh bhi ye sir tumhare liye especially nahi aayenge padhane ke liye 😆😆
Bro your expectations is big but never come true
@@artigupta1780 👍
Then nobody will fail in science
This was my first youtube lecture of physics wallah foundation and I love it. Thank you sir for making this amazing video and make us understand this concept.
Mera bhi
Me too
Me too
mine too
Yes me too
The hallo bachhoooooooooo is so good 0:01😂😂😅
Very Nice Explanation Sir, pls bring the deleted part also of this chapter
Really nice teaching
Me tooo
What's with the deleted part ?
i have a doubt,
That how can you say that if earth attracts moon with a force than the moon attracts the earth with the same force because more will be the mass more will be the force
@@raoyadav7635 Bruh, when you talk about Gravitational Force, you have the formula F=Gm1m2/r². Basically m1 and m2 are the masses of the two objects b/w which you are finding the gravitational force, so be it Force on earth due to moon or on moon due to earth, it will remain the same. If we talk about the direction, then both the forces act on the opposite bodies. As the mass of moon is less than that of earth, we can see the impact only on moon, but in reality both of them attract each other.
Best explanation by best teacher !!💐💐
Yes ❤👍👍
True
yes
Very nice and god bless you
Yes
8:35 - Yes, air will also have gravity because it has mass .
Yes sir air will also have gravity because it has mass
No there is no gravity in air
No because if you weight a balloon with 0 air then weight the balloon which has air in it this will be same
Hmm...this is a topic to think!!
There is no gravity in the air
*Challenger Questions -:*
Q. What happens to the force between two objects, if
1) the mass of one object is doubled ?
*Sol-:*
F = G×M1×M2/r².....(1)
F⁰= G×M1× 2M2/r².......(2)
Dividing eqⁿ 2 by 1 . Then,
F⁰/F = G×M1×2M2/r² ÷ G×M1×M2/r²
F⁰/F = 2/1
F⁰= 2F
The force will be twice if the mass of one object will doubled.
2) (I) the distance between the object is doubled.
*Sol-:*
F= G×MI×M2/r².......(1)
F⁰= G×M1×M2/4r².......(2)
Dividing eqⁿ 2 by 1.Then,
F⁰/F = G×M1×M2/4r² ÷ G×M1×M2/r²
F⁰/F = 1/4
F⁰ = F/4
The first become one fourth if it's distance doubled.
(II) the distance between the object is tripled.
*Sol-:*
F=G×M1×M2/r².....(1)
F⁰=G×M1×M2/9r²........(2)
Dividing eqⁿ (2) by (1).Then,
F⁰/F = G×M1×M2/9r² ÷ G×M1×M2/r²
F⁰/F = 1/9
F⁰= F/9
The force will be one-ninth if the distance will tripled.
3) the masses of both objects are doubled?
*Sol-:*
F = G×M1×M2/r².........(1)
F⁰= G×2×M1×2×M2/r²......(2)
Dividing eqⁿ (2) by (1).Then,
F⁰/F = G×2×M1×2×M2/r2 ÷ G×M1×M2/r²
F⁰/F = 4/1
F⁰ = 4F
The force will be 4 times if the mass of both two objects are doubled.
Hope ! This is correct 🥰🥰🥰🥰.
Lekin devide kiun karu substraction Kar ke nehi hoge keya ?
Please tell me why🙏🙏
Always try to give extra information..... Thanku so much sir🙏🙏🙏
Sir you teaches very nice 👍👍👍👍and thanks alot for the video🎥🥰🥰🥰 sir you are the best👍💯👍💯
Hii
Challenger question
1:- force become twice
2:- 1/4 of the previous and 1/9 of the previous
3:- it becomes 4 times
Yes
Finally I found a navodayan 😂🤣
@@Renubala07 that's good 😂
@@harshichaudhary1021 wahh!!
@@spgamer3389 🤘
8:46 Yes sir Air have Gravity and Gravitational force both because Air is made up of fine particles and all particles have some mass.
Can you explain more?
@@Gamma_plays you will know when you will read the chapter atoms and molecules. In that chapter the mass of gases(air) are given . Hence we know that air have mass and sir had told that anything that have mass have gravity.
Challanger question
1:- F=G.M1.M2/r².....(1)
F=G.2M.M2/r².......(2)
By dividing eqn 2 by 1
F¹/F=G.2M.M2/r²/G.M1.M2/r²
F¹=2F. Answer
U r live in aayodhya
Sir session bahot accha tha.
Ya bro
Yes bro
yes bro
Your teaching is so good as compare to other teachers ❤️
Thank you
Don't compare!
Don't compare
Thank you
All R best
According to Newton's second law of motion, the force acting on an object is equal to its mass multiplied by its acceleration (F=ma). Therefore, if the mass of one object is double, the force between the two objects will also double.
Challanger Question Ans.
1) Force will be twice
2)Force will be (i)1/4 of previous value...(ii) 1/9 of previous value..
3)Force will be 4 times.....
Thank you sir for great explaination😊😊
How you get the answer please reply
Thanks to Alakh sir for choosing the great teachers for us.
Yes
Thankyou so much sir this video helped me so much 🙏best teacher I have ever seen🙏🙏thankyou for your teaching sir 🙏🙏🙏I appreciate your teaching 🙏
Sir your teaching method is very nice ☺️ thanks 👍👌🥰 sir 🎉
One of the best teacher of physics I have ever got❤️❤️❤️
44:02 # Challenges question
(I) The force will become doubled
(2) A) when doubled force will become 4 times
(2)B) when tripled force will become 9 times
(3) The force will become 4 times
Thank 🙏🙏you sir
Maza aaya
When doubled force will be 1/4 if previous F
And when trippled force will be 1/9 of previous F
Physics wallah foundation is the best for students on whole u tube world for study with enjoy......🥰🥰🥰
What a great lecture !!! . Thanks sir ji for this great lecture 🔥🔥🔥🔥🔥
You are great sir ur teaching style attract me always👑👑 , sir we need again a new batch for class 9. Like a sprint batch ... .. 😊🙌🙏🙏
Write
Yaa❤❤
Thanku so much sir.. You have great teaching style..🤗🙂🙂 I was dull in physics but because of you now I love physics and I have decided to take PCM after 10th..🤠🤠
PCB
phy chem bio
PCM
Take social science
Math is devil
Challenger question's answer :
1. It will be twice.
2.1/4 of the previous in double and 1/9in triple .
3. 4 times more.
Any one noticed that _kar bhala to ho bhala _Newtown 🥉 law😂😂🎉
Kya bhai yi Kya hai
😅😅😅
I noticed before you but I don't comment like you l come here for the sake of learning bloody, written by me ( vidhi saini)love 💕 you
Challenger questions 44:03
Q1 I) Force will become 2 times greater than previous Force
II) Forced will become F/4 and F/9 times
III) force will become 4 times greater
BaHi mujhe samjhao kasy
Are you fool you don't know how to do this 😠😠 khud try kar
Even paid clases won't teach us like this......❤️
Thnku sir 😊
Thanks a lot sir....💜💜
Seems like.. would never get a teacher like u!!
U r fantastic sir!! Keep going..😊😊
Hi
Thank you very very very very very very very very very much❤ sir. Guru ji apke jesa teacher 👩🏫 agar sabko mil jaye toh sab scientist 👨🔬 ban jaye ga 24:35 🎉🎉🎉🎉❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤Physics is easy 😎❤❤❤❤❤🎉🎉🎉🎉🎉🎉
11:45 1)moon revolve because of earth
2)Eart because of sun
3)Sun (soler system) because of supermassive black hole in center of gallexy
4)and gallexy because of center of the mass of gallexy cluster
9:50
Grt lecture sir...
👍🏻👍🏻
THANK U SIR
Sir after seeing your video physics became my favorite subject 😊😊. THANK YOU SO MUCH
Sachme....waah..!!
I like the teacher as you explain in hindi ...... study know English very well but still we catch concept more readily while learning in hindi ... that's why l like This foundation more than Bhedan ❤❤❤❤❤❤😮😮😮
Yes sir air also have gravitation even an all the partical has the gravitational force between them and sir that's why radon is heaviest gas so it is at the lowest level of the ground and hydrogen is the lightest so it is at the top.
Do air have mass ?
I think it has
@@premsudhasingh6253 gas has molar mass
OP level bhai OP
But what about mass??
Sir Hume school me samjaya nahi, sirf ratta marvaya jata hai . Mam ko verbally Hindi me answer do to bolti hai English mein chahiye .sir pehle mujhe physics se nafrat thi lekin jab se aap padhate ho tab se physics mujhe pasand aane lagi
Sir physics wallah ko apni ek school khol leni chahiye jaha pe bacho ko robot jaisa nahi insano jaisa treat Kiya jaye
𝒂𝒂𝒑 𝒌𝒂𝒉𝒂 𝒔𝒆 𝒉𝒐𝒐
Sir you are the best physics teacher in our world ❣️❣️❣️❣️❣️❣️❣️❣️
36:11 , when 6.4 and 6.7 were canceled, all that's left is 60/6.4, which comes out to be 9.3, not 9.8, so that cancellation can't be done in the exam and the whole tedious calculation is required.
My answer for this question is coming 6.25 x 10^7 as I took the value of G as 6.67 x 10^-11.. I think their is some mistake in the calculation that sir did. I even rechecked my answer but it was coming same. Pls try it once by putting G=6.67 x 10^-11 and let me know the answer..
you share the same name as me lol
Sir just because of you physics is my favourite subject now..😊😊
omfoo
Mine also
Areh bhai bhai😹👍
37:15 funniest motion 😂😂
Edit-Thanks for 1k like❤️❤️😘😘
3:06 newton was sitting in his home and watched the tree of apple and a apple fall from tree. Newton thought that why this apple fall only downside, why it's not going upside or in any other direction. Then he discovered the *GRAVITY* . This was written in his *DOCUMENTARY* .
5 minutes ke incident se itna bada universal law nahi baan gaya khud physics wallah alak pandey ne kha hai
@@taradevi5913 he was working on gravity for a very long time. After this incident may be he got am inspiration or an idea?
@@krishna290gamer2 exactly that's what I was saying he was working on it for a very long time
@@krishna290gamer2 you are in 10th now
Bhai log tum sahi keh rahe ho sirf apple girne se koi itni badi discovery nahi kar sakta iske peeche bahut saalon ki mehnat hai nahi to hum bhi patang ko udhta dekhke **upravity** bana dete
Sir you are a brilliant thanks for you explaining this chapter. sir your explanations is nice 🙏🙏🙏🙏
I never seen such great teachers 😊😊
Than now you can see in RUclips▶️
Hlo
Thank you sir pura lecture samajh me a gaya🥰🥰🙏🙏
Mughe bhe
Thanks for better understanding 6:55
Best teacher of world
Of physics
Sahi baat
Challengers question
1) 2 times
2) 1/4 times and 1/9 times
3) 4 times
1.i) 2times of the previous force
ii) doubled - 1/4 of previous force
Tripled - 1/9 of previous force
iii) 4times of previous force
.
How you get the answer please reply
Apple did not fall on Newton's head it was just observed by him falling
Rakshak Sir Op 🔥🔥🔥🔥🔥
Challenger questions:
1) Force will be doubled
2) If distance is doubled, force = F/4
If distance is tripled, force = F/9
3) Force will be 4 times the previous force.
Amazing lecture!
Thanks sir l understand the lecture very well
And also l have no problem
Once again thanks sir ☺️👍🙏
Thank you sir you teaching style is too good and your questions in lecture Is gravity is in air ... Yes the gravity is in the air 🙌🙏🙏
Yes sir ,Gravity is present in air also. That's why in the lower height pressure is higher and as we go higher the air pressure goes on decrease
Han theek gyaan na baanto 😂
Galat uttar
Challenger question answers
1) If one of the masses is doubled then the force will double.
2) If the distance is doubled the the force will become half
and if the distance is tripled then the force will be one-third.
3) If the masses are doubled(both the masses) then the force will be quadrupled.
Sir your teaching is soooo impressive😍😍😍🥰🥰...... Sir plzzz teaches us chemistry, bio also😍😍
8:45 Yes sir
As you told that mass is required and air has negligible mass
Noo
No .. Because air is considered as matter
.... So air have occupies space and also have mass
I think this lesson is so hard, but I see your vidio my mind is changed now, I am thik this chapter is so interesting. 📚🤗
Thank you so much sir....and Happy Teacher's Day to you and to all my Respected Teachers of PW Foundation 😊🙏🏻
CBSE students
Sir you can't ever know your place in my heart ❤️❤️.. sir you are the my best teacher ...... I am studying in Jawahar navodaya vidyalaya.. but there are no teacher has skill like you .. hat's off to you sir...
Which navodya.....I am too ..from there
Sir aapki Physics, biology aur geography bahut achhi hai
Becoz of one apple 🍎 we are studying a huge tricky chapter
8:37 yes sir Air mein bhi gravity because air mein small particles hote h unme bhi Mass hota h issiliye Air mein bhi gravity hoti h
😊😊
𝙋𝙡𝙚𝙖𝙨𝙚 𝙨𝙪𝙗𝙨𝙘𝙧𝙞𝙗𝙚 𝙢𝙚
Q1 I) Force will become 2 times greater than previous Force
II) Forced will become F/4 and F/9 times
III) force will become 4 times greater
44:00 (1) the force becomes 2 times when the mass of one object is doubled
(2)the force becomes one-forth times when the distance between doubled and the force becomes one - ninth times when distance between object is tripled.
(3) the force becomes 4 times when the mass of both object is doubled.
😊
The second is tricky
@@sufferesthumanbeing1926 no it is not tricky you can also learn the 2 answer in another way that is the force becomes 4 times less when distance between both of object will double
And the force become 9 times less when the distance between the objects will tripled
Ok
Sir You are best teacher of😊world youtube teacher of physics 🙏
Rakshak sir is the best physics teacher.🙏🙏🙏👍👍
Your are best teacher and I love yr teacher style👍
Best teaching ever I had seen ; before some months when I hadn't found this channel I was very weak in physics but now I had got full marks in physics due to PHYSICS WALLAH platform ...A very special thanks to ALAKH SIR and PHYSICS WALLAH TEAM •••.
*🧐DOUBT⁉️⬇️*
As the universal law of gravitation says that it directly depends on the masses it implies that a man of mass 60 kg will get more attracted towards earth than a boy of mass 25 kg ?
(Answer If You Know)⬇️
Rakshak sir OPIPOPOPOPPOPOP
@@pranavpratik. Both will be attracted toward the earth at the same speed as their air resistance present on the earth so it cannot be possible on the earth but if we make a vacuum then we can prove this experiment.
@@pranavpratik. both will be attracted with different speeds heavier man will be attracted faster compared to the lighter man....but in case of vacuum , law of gravitation won't apply, so the speed will be same for both the heavy and the light man
@@MrAtif-sk1hj sorry check your answer on earth air resistance is different at different places depending on relief features, air molecules, water molecules, clouds, density and other particles such as dust particles !!
Sir mujhe physics samjh me nahi ati par ap ka video dekhne ke baad sab samjh me aajata hai ❤❤
Thank you sir ji💛💛💛💛💛💛💛💛
Yes sir , Air is applying force on us which is opposite to the gravitational force.
Can you examplain more please
2. If the distance between them is double then the force becomes 1/4 of the previous force . And if the distance between them is triple then the force becomes 1/9 of the previous force.
No wrong check out my answers
Challenger Questions:-
(1) Fn=2F
(2)(i) Fn =F/4
(ii) Fn = F/9
(3) Fn =4F
Hello 😍😘
@@studypagal8120 bolo behena
Hlo
@@studypagal8120hlo😊
@@rajibsinghasingha5100😍
0:40 Sir aaj aap dance nahi kar paaenge 😂😂Aaj mohit puniya sir ki baari hai 😂😂
Aaj kho jaenge puniya sir dance ki duniya me 🤣🤣🤣
Tum sabhi video mein sirf comment karne aati ho kya 🙄
Aap yaha bhi 😂😂😂
Sir you are a great teacher.💘💘💘💘
Kon kon mere sath h ki agar us time Newton ke sir per apple nhi girta to aaj ye gravity nhi pdhni padti please vote for this 😂😂😂😂😂😂😢😢😢😅😅😅😅😅😂😂😂😂😂😂
Apple ki jagah nariyal girna chahiye tha direct upar 😂
😂
Question 1)- a)- the force is doubled.
b)- force becomes 1/4 when radius between the object is doubled and becomes 1/9 when tripled.
c)- the force is quadrupled.
Challenger question answers:-
1) Force will become 2 times of initial force.
2) when the distance b/w two objects is doubled than force will become 1/4th of its initial value and when it is tripled it will become 1/9th of its initial value.
3) force will become 4times when masses of both the objects are doubled.
& Air also has gravity because it has mass.
I know that there is mass in the air too
8:54 yes sir air has gravity Because air has mass, Earth's gravity attracts it and gives it weight.
Yes
And we say literally he was amazing....❤✨
8:36
Because air has mass, Earth’s gravity attracts it and gives it weight. Because it has weight, and the air molecules are constantly bumping into things, it exerts pressure.
Aap mahan ho baba
amazing explanation sir ❤️😁❤️
Wow sir thanku thanku a lot
The way u teach us is a uniqe and technical it helps us to understand any things easily. Well way of teaching 💓
Challenge question
1. If the mass of the object is doubled then the ans is F'=2xF
2. The distance when doubled then the ans is F'=1/4xF
The distance when tripled then the ans is F'=1/9xF
3. If the masses of both the object increases the ans is F'=4xF
ati sundar sir jee
;
;
;
;;
thanks for pw
Challenger question:
1. Let, Mass of 1 object be doubled=2M
New force =G ×2Mm/d²
=2×old force
If the mass of one object is double the foce is also doubled.
2.If the distance is doubled, distance=2d
Then,
F=GMm/(2d)²
=GMm/4r²
=1/4×old force
When the distance is doubled the force becomes 1/4 times of the old.
3. if the distance is tripled, distance =3d
Then,
F=GMm/(3d)²
=GMm/9d²
=1/9 ×old force
When the distance is tripled the force becomes 1/9 times of old force.
Amazing
No sis that is not like that
sir you are a very nice teacher....keep going nd bring us fantastic videos like this oftenly
44:00
i) 2 times
ii) one fourth and one ninth
iii) 4 times
👍If. Correct
If wrong write answers in comment.
Sir physics wallah ko apni ek school khol leni chahiye jaha pe bacho ko robot jaisa nahi ,insano jaisa treat Kiya jaye, ratta nahi samjhaya jaye
Please sir alakh sir ko schools kholne ka idea zaroor dijiye
Aur pune mein khaskar kholna near Hadapsar
Thank you sir ❤️
Great explanation .....
Best Science teacher in online platform