XI Physics Solved Numericals | Ch# 3 Dynamics |
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- Опубликовано: 15 сен 2024
- Class: XI, 11, First Year
Unit :03 Dynamics
Numeicals Covered:
1. A car weighing 9800 N is moving with a speed of 40 Km/h. On the Application of breaks it comes to rest after traveling a distance of 50 meters. Calculate the average retarding force? (Ans: 1234. 57 N)
2. A helicopter weighs 3920 N. Calculate the force on it if it is ascending up at the rate of 2m/s2. What will be the force on helicopter if it is moving up with a constant speed of 4 m/s? (Ans: 4720 N, 3920 N)
3. A 100 grams bullet s fired from a 10 kg gun with a speed of 100m/s. What is the speed of recoil of the gun? (Ans: 10 m/s)
4. A machine gun fires 10 bullets per second into a target. Each bullet weighs 20 gram and had a speed of 1500 m/s. Find the necessary force to hold the gun in position? (Ans: 300 N)
5. A 50 grams bullet is fired into a 10 kg block that is suspended by a long cord so that it can swing as a pendulum. If the block is displaced so that its center of gravity rises by 10cm, what was the speed of bullet? (Ans: 281.4 m/s)
6. A 70-gram ball collides with another ball of mass 140 gram. The initial velocity of the first ball is 9m/s to right while the second ball is at rest. If the collision were perfectly elastic, what would be the velocity of two balls after the collision? (Ans: - 3m/s, 6 m/s)
7. A truck weighing 2500 kg and moving with a velocity of 21m/s collides with a stationary car weighing 1000 kg. The truck and car move together after the impact. Calculate their common velocity? (Ans: 15 m/s)
Elastic Collision Physics Problems
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Unit 1 Measurements
Q.1 to Q.9 • XI Physics | Solved Nu...
Unit 2 Kinematics
Q.1 to Q.6 • XI Physics Solved Nume...
Unit 3 Dynamics
Q.1 to Q.7 • XI Physics Solved Nume...
Unit 4 Rotational and Circular Motion
Q.1 to Q.5 • XI Physics | Solved Nu...
Q.6 to Q.9 • XI Physics | Solved Nu...
Q.10 and Q 11 • XI Physics | Solved Nu...
Unit 5 Work, Energy and Power
Q.1 to Q.6 • XI Physics | Solved Nu...
Q.7 to Q11 • XI Physics | Solved Nu...
Unit 6 Fluid Statics
Q.1 to Q.5 • XI Physics | Solved Nu...
Q.6 to Q.10 • XI Physics | Solved Nu...
Unit 7 Fluid Dynamics
Q.1 to Q.5 • XI Physics | Solved Nu...
Q.6 to Q. 10 • XI Physics | Solved Nu...
Unit 8 Electric Fields
Q.1 to Q.5 • XI Physics | Solved Nu...
Q.6 to Q.10 • XI Physics | Solved Nu...
Unit 9 Capacitors
Q.1 to Q.3 • XI Physics | Solved Nu...
Q.4 to Q.7 • XI Physics | Solved Nu...
Unit 10 DC Circuits
Q.1 to Q.6 • XI Physics | Solved Nu...
Q.7 • XI Physics | Solved Nu...
Unit 11 Oscillations
Q.1 to Q.5 • XI Physics Solved Nume...
Q.6 to Q.10 • XI Physics Solved Nume...
Unit 12 Acoustics
Q.1,4,5,6 • XI Physics | Solved Nu...
Q.7,8 and 10 • XI Physics | Solved Nu...
Unit 13 Physical Optics
Q.1,2,4,5 • XI Physics | Solved Nu...
Q.12 to Q.15, 17,18 • XI Physics | Solved Nu...
Unit 14 Communication
No Numericals
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Bht channel dekhny ky baad ap ka samjh aya tarika thank you so much allah ap ko khush rakhy ameen ❤
Aameen.
JazakAllah
This is my first video of your channel ❤ and it was a brilliant experience i just subscribe your channel, ☺️ thank you so much sir keep it up ❤️✨ our all the best wishes are for you 🙇❤️
sir numerical 3 me ghlti ki he ap ne use check krlen
v2 100 he 1000 nhi
yes you are right
M bhi ISI m confuse hoon
Book me misprinting hai, speed 1000 m/s hogi to answer book wala ayega.
In 3rd numerical you took value of v² 1000 while it's 100
It's a correction in the book.
same it's not written 1000 in book and answer is also diff
Yes sir ya que no 3 ma V² ki value 100 ha apna 1000 likhi or jb hm 100 sa karai ga to ans -1m/s aye ga or book ma ans galat ha
@ahsannobita8347 Book me correction hai, speed of bullet 1000 hogi then answer sahi ayega.
@@TalhasPhysicsAcademy but sir book ma ans 10m/s aya ba or apka ans -10m/s arha ha
جزاک اللّٰہ ❤
Thank you so much 😊❤
You're welcome 😊
Sir chap 3 Kay CRQs or ERQs bhi karwa dein please 🤗
Masha Allah excellent explanation
Thanks for liking
@18:15
V2 should 100 according to data of the question
but I think to prove the correct answer according to the text book answer we put 1000 instead of 100
Dear sir you explained every thing
Thanks.
Sir plz full lecture upload karain 😊😊😊😊
Thank you sir for explaining in the best way 😊
Most welcome 😊
Solution PDF: drive.google.com/file/d/1rgr4qsvvNCmgjR3s4tDAS1VrQRf9X8Tx/view?usp=drivesdk
Sir chp 3 kay assignment on page number 61 bhi kara dain
Sir aap ny q4 may 300N ans likha jab ky wo negative may hona chaiyay
Kindly give its pdf of solutions
Very helpful❤ thankyou so much
You're welcome 😊
where did minus sign go in 23:56
Same question
Since it is mentioned in the question that force is required to hold the gun in position.
So the magnitude is 300N and if you want to show direction then minus is written.
sir in question 3 u have mistakenly write v2 1000 instead of 100
He has explained keh book mai ghalat likha hai and there's correction to be made that Speed of bullet is 1000m/s not 100
sirrr agar aap is chapter k worked examples bhi solve krwa den tou.....please.
sir work example b kra dn wo b exam k poit s important h
Sir aapi drive open nh hoahi hai
But sir if weight and velocity both are equal then how the helicopter is going up it should stay in one position
It is called dynamic equilibrium, jab forces balance hun aur body constant velocity ke sath move kre.
Q4 MEIN -300 ANSWER AYEGA NA!!!! PLEASE CLEAR
Magnitude just 300 hoga aur agar direction show krengy to negative bhi lagaen gy.
Sir kindly load physics 11 chapter 5 numericals
Q5 mein V nikalny ky liye gravity ki value 9.8 kiyun li -9.8 leni chahiye thi bcz against gravity kaam huwa hai
Acceleration ki jagah pe -9.8 tab put krte hain jb koi equation of motion use kr rhy hon.
Jazakallah sir ✨
Aameen.
Jazakallah ✨
Aameen.
Assalamualaikum
Sir Apne data me v2=100m/s liya
Or solution me 1000m/s liya hai why?
Book me mistake hai.
answer 1000 se correct ayega
To Kia V 2 KO 1000 hona chahiye Tha
Sir wase Reply krna Sir ya baat true ha na ka Iss Book ma Zada numerical asa ha jin ma Asaa Formula istemal hota ha jo book ma ni han…. first 3 chap ka ilawa
Nahi, esa kuch numericals me hai
❤❤
Sir plzz daily basis pe lecture upload kro chapter wise boards ki ly plz
Yes, I will upload.
Sir 4 number me answer _300 araha ha
Thanks 😊
You're welcome!
Sir plz also upload mcqs
Thanks you sir for your great explanation 😊. This is very helpful for me.
You are most welcome
Sir in numerical no 4 why final speed in 0?
After the bullet strikes the target it will stop.
Sir ya jo ap na que no 4 kia ha is ma initial velocity jo Vi ha ya to 0 honi chiye q ka bullet chlnai sa pahlai to rest ma thi na or Vf jo ha wo1500 honi chiye
Target pe lagne se pehle 1500 aur target pe lagne ke bad zero.
Dono condition me force ka answer same ayega.
@@TalhasPhysicsAcademy ok sir thank uh so much
🎉
There should be in K views in your video sir , your way of teaching is like superb basically yesterday I got skip my physics tution but when I search this topic and opens your video I was shocked after listening whole video because your way of teaching was exact similar to may coaching teacher !!!! Thanks sir for your video ❤
So nice of you.
Sir q4 me -300N aayega
@@kanwalamir6875 DATA
mass of 1 bullet = 2g
mass of 1 bullet = 20*10=200g=0.2kg
t=1s
vi=0
vf=1500m/s
f=?
FORMULA
f=change in momentum with respect to time
CALCULATIOn
f=0.2*1500-0.2(0)/1
f=300N
sir numerical 3 mein aapne solution mein v2 ko 1000 kiun liya ?
Correction hai, tab he answer 10 m/s a sakta hai.
Sorry agar na mane to board pe samjae gy to bohat ache tarike se samaj aae ga 🙏
sir question 3 mein - bhi ayega
sir question no. 4 main ap nay mass 0.02 likha hai jab kay wo tou weight hai
0.02 kg hai it means wo mass hai.
thank you sir
Sir ap ny kaha ky F=ma say bhi hujye ga us ka method bata den
In which question?
AP nay kha f=ma say bhi hojyga
USka method bhi bataden
Which digital screen is it?
Tablet screen.
Ya " g" ki value kanha sy ATI ha sir m=wg ma
m= w/g
g ki value 9.8 or 10 dono use kr sakty hain jo acceleration due to gravity ki value hai.
Sir v2 tu 100 apne 1000 se kar leya
Misprinting hui ha book me V2 Ki value 1000 ha
How 1500 is initial velocity ?
In question no 4
@@DuaAnisMundiya-lt1ut
@@DuaAnisMundiya-lt1ut
DATA
mass of 1 bullet = 2g
mass of 1 bullet = 20*10=200g=0.2kg
t=1s
vi=0
vf=1500m/s
f=?
FORMULA
f=change in momentum with respect to time
CALCULATIOn
f=0.2*1500-0.2(0)/1
f=300N
Sir ap target pepper bana Tay ha Kiya
Ap ka koi Guess pepper ha
Sir reply dyn diya ha
ruclips.net/video/7RBYuafQSFo/видео.html
Chapter wise
1st number bullet ki velocity sir 100 Hy apne 1000 li Hy
Answer 1000 se sahi ayega.
V2 ko apne solution k time 1000 le liya lkn wo 100 tha or 100 me wrong answer ara hai
Book me correction hai, answer 1000 se sahi ayega.
31:12 pr 1.4 kaise aya hai sir
V ka answer hai jo 1.96 ka root lene se aya hai.
Numerical 4 me -300N answer aarha ha aap ne 300N likha ha
Magnitude of force 300N hai, negative sign opposite direction ko show kr rha hai.
sir v2 1000 kese hui
Misprinting hui ha book me V2 Ki value 1000 ha
Yeh 1000m/s kesay Kia bhai
Book me mistake hai, correct answer 1000 se ayega
Hir
Or ap 300 likha hai
Pr question3 me speed tu 100 the 1000 kaise. Hogaye?
Book me mis printing hai, answer 1000 se sahi ayega
Sir aapi drive open nh hoahi hai
Hir