Centre Of Mass 11 || Trick For COM of Remaining Part || When Mass is Removed IIT JEE MAIN / NEET ||

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1) Complete Class 12th + JEE Mains/ NEET syllabus - Targeting 95% in Board Exams and Selection in JEE MAINS / NEET with a Strong Score under Direct Guidance of Alakh Pandey.

2)Live Classes and recorded Video Lectures (New, different from those on YouTube)

3)PDF Notes of each class.

4)DPP: Daily Practice Problems with each class having 10 questions based on the class of JEE Mains/NEET level.

5)Syllabus Completion by end of January, 2021 with topicwise discussion of Last 10 Years Problems in Boards, JEE Mains/NEET within Lecture.

6)The Complete Course (Video Lectures, PDF Notes, any other Study Material) will be accessible to all the students untill JEE Mains & NEET 2021 (nearly May 2021)

7)In case you missed a live class, you can see its recording.

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****Test Series for XI & XII****

We provide you the best test series for Class XI,XII, JEE, NEET chapterwise, which will be scheduled for whole year.
The test series follows very logical sequence of Basic to Advance questions.&
Evaluation of Test and Solution to all the questions at the end of the test.

11 chap 7 || System of Particles - Centre of Mass 01 || Introduction Of COM for IIT JEE / NEET ||

11 chap 7 | Centre of Mass 02 | COM of Continuous Bodies | COM of Semicircular Ring ,Disc,Triangle |

11 chap 7 | Centre of Mass 03 | COM of Continuous Bodies | COM of Hollow and Solid Hemisphere , Cone

Class 11 chapter 7 System Of Particles | Centre of Mass 04 | Motion of Centre Of Mass IIT JEE / NEET

Class 11 Chapter 7 System Of Particles | Centre Of Mass 05 | Conservation Of Linear Momentum IIT JEE

Class 11 Chapter 7 | Centre Of Mass 06 | Conservation of Momentum in Bomb (Shell ) Explosion IIT JEE

Centre Of Mass 07 || Collision Series 01 || Elastic Collisions in 1 -D || IIT JEE MAINS / NEET |

Centre Of Mass 08 || Collision Series 02 || Elastic Collision in Two Dimension IIT JEE / NEET ||

Centre Of Mass 09 || Collision Series 03 || Inelastic Collisions IIT JEE / NEET ||

COM 10 | Collision Series 04 | Coefficient Of Restitution | Elastic and Inelastic Collisions IIT JEE

Centre Of Mass 11 || Collision Series 05 | Oblique Collision | Elastic Inelastic Collision JEE /NEET

[PhysicsWallah]

Live Classes, Video Lectures, Test Series, Lecturewise notes, topicwise DPP, dynamic Exercise and much more on Physicswallah App.



LAKSHYA Batch(2020-21)

Registration Open!!!!

What will you get in the Lakshya Batch?

1) Complete Class 12th + JEE Mains/ NEET syllabus - Targeting 95% in Board Exams and Selection in JEE MAINS / NEET with a Strong Score under Direct Guidance of Alakh Pandey.

2)Live Classes and recorded Video Lectures (New, different from those on YouTube)

3)PDF Notes of each class.

4)DPP: Daily Practice Problems with each class having 10 questions based on the class of JEE Mains/NEET level.

5)Syllabus Completion by end of January, 2021 with topicwise discussion of Last 10 Years Problems in Boards, JEE Mains/NEET within Lecture.

6)The Complete Course (Video Lectures, PDF Notes, any other Study Material) will be accessible to all the students untill JEE Mains & NEET 2021 (nearly May 2021)

7)In case you missed a live class, you can see its recording.

8)You can view the videos any number of times.

9)Each chapter will be discussed in detail with all concepts and numericals

10)Chapterwise Approach towards JEE Mains/ NEET & Board Exams.


****Test Series for XI & XII****

We provide you the best test series for Class XI, XII, JEE, NEET chapterwise, which will be scheduled for whole year.
The test series follows very logical sequence of Basic to Advance questions.&
Evaluation of Test and Solution to all the questions at the end of the test.

11 chap 7 || System of Particles - Centre of Mass 01 || Introduction Of COM for IIT JEE / NEET ||

11 chap 7 | Centre of Mass 02 | COM of Continuous Bodies | COM of Semicircular Ring, Disc,Triangle |

11 chap 7 | Centre of Mass 03 | COM of Continuous Bodies | COM of Hollow and Solid Hemisphere, Cone

Class 11 chapter 7 System Of Particles | Centre of Mass 04 | Motion of Centre Of Mass IIT JEE / NEET

Class 11 Chapter 7 System Of Particles | Centre Of Mass 05 | Conservation Of Linear Momentum IIT JEE

Class 11 Chapter 7 | Centre Of Mass 06 | Conservation of Momentum in Bomb (Shell ) Explosion IIT JEE

Centre Of Mass 07 || Collision Series 01 || Elastic Collisions in 1 -D || IIT JEE MAINS / NEET |

Centre Of Mass 08 || Collision Series 02 || Elastic Collision in Two Dimension IIT JEE / NEET ||

Centre Of Mass 09 || Collision Series 03 || Inelastic Collisions IIT JEE / NEET ||

COM 10 | Collision Series 04 | Coefficient Of Restitution | Elastic and Inelastic Collisions IIT JEE

Centre Of Mass 11 || Collision Series 05 | Oblique Collision | Elastic Inelastic Collision JEE /NEET

Centre Of Mass 11 || Trick For COM of Remaining Part || When Mass is Removed IIT JEE MAIN / NEET ||

Class 11 chapter 7 | Systems Of Particles and Rotational Motion | Rotational Motion 01: Introduction
Class 11 chapter 7 | Rotatational Motion 02 || Torque - Moment Of Force - Turning Effect Of Force |

Class 11 chapter 7 | Rotational Motion 03 | Rotational Equilibrium IIT JEE / NEET | Torque Problem |

Class 11 chapter 7 || Rotational Motion 04 || Moment Of Inertia - Introduction ||

Rotational Motion 05 | Moment Of Inertia Of Continous Bodies - Rod, Ring, Disc, Cylinder, Triangle

Rotational Motion 06 || Moment Of Inertia Of Sphere and Cone || MOI of solid Sphere JEE MAINS /NEET

Rotational Motion 07 || Perpendicular and Parallel Axis Theorem Moment Of Inertia JEE MAINS / NEET

Rotational Motion 08 | Best Numericals of Rotational Motion and Rigid Body Dynamics JEE MAINS /NEET

Rotational Motion 09 | Hinge Forces | Rigid Body Dynamics JEE MAINS / NEET | Rotational Numericals

Rotational Motion 10 || Kinetic Energy of a Rotating Body | Work Done By Torque IIT JEE MAINS / NEET

Rotational Motion 11 || Angular Momentum IIT JEE MAINS / NEET || Angular Momentum of Rotating Body


Rotational Motion 12 || Conservation Of Angular Momentum || Angular Momentum IIT JEE MAINS / NEET

Rotational Motion 13 | Rolling Series 01 | Combined Translation + Rotational Motion |IIT JEE / NEET

Rotational Motion 14 | Rolling Series 2 |MOI, KE and L expression for Translation + Rotation Motion

Rotational Motion 15 | Rolling Series 3 | PURE ROLLING JEE MAINS / NEET | Uniform PURE ROLLING

Rotational Motion 16 | Rolling Series 4 | Forces in PURE Rolling | Pure Rolling IIT JEE MAINS / NEET

Rotational Motion 17 | Pure Rolling on Inclined Plane IIT JEE MAINS / NEET | Rolling Series 5

[PhysicsWallah]

Kindly Poll for next chapter in physics and Chemistry starting 21st November. Poll going in community tab of our channel

[hellsowner]

My answer for the last question is coming out to be ... 2r/3(4-pi)...

Rectangle COM: (-r/2, 0)..
Semicircle COM : (-4r/3 pi) ... since they are to the left of origin!

[alana_jaykar]

Sir, the answer to the HW question is:-
-2r/3(4-π)

Thank you sir for teaching us❤️

[prashantundrikar]

Sunday ho ya monday Roj dekho Physics Wallah ke naye funde. Salute to you sir☺️☺️😀😀

[nirmalmistry]

helpful lecture,
Last question
A¹ = 2(r^2)
A² = PI × (r^2)/2
X¹ = -r/2
X² = -4r/3PI
C.M. = -2r/(3(4-PI))

[techguru]

29 videos it was really useful.. thank you so much sir❤️

[ssoujatyapahari]

COM of rectangle is at origin according to sir
and coordinate of semicircular cut portion is area of rectangle A1 = 2r*r=2r^2 and area of semicirclular cut portion A2 = πr^2/2 applying these two area and the the coordinates of x axis in the = (A1*x1 - A2*x2 )/A1 the answer is coming -2r/3(4-π)

[prajwal]

@physicswallah Sir always be happy😁😀😊☺❤
Aapki smile 😊 Dekh ke mere chehre Par smile aa jaati hai
We all make our parents and @you proud
Thank you so much 👍

[Nabija.]

A1=2r^2, x1= r/2, A2= πr^2/2, x2=4r/3π now calculate🤗🤗 the answer is 2r/3(4-π).

[vikramkhatri]

Physics wallah is great. If you agree hit like

[ShivaniSharma-vsys]

Sir you are doing great job for us
I respect you with bottom of heart
Thank you so much sir 😊😊😊😊

[Ray]

I am starting watching your videos in lockdown.i have not take admission in any institute. I am dependent only on your videos and mujhe ye kehne mein kuch hestitation ny ho rhi ki aapki di gyi concept har institute ke barabar ya us se bhi achhi hi u sir .and thanks to u very very much😊😊😊

[ashutoshsharma]

Sir abhi kuch chapter ke kuch topics Bache Hain (1) kinematics-projectile on an inclined plane (2) Newton's laws of motion- weldge constraint (3) center of Mass - spring questions (4) states of matter -ediometry (5) ionic equilibrium- acid base titration

[labakumardebnath]

Sir, I am from Tripura. I have no words to appreciate your way of teaching.প্রণাম নেবেন স্যার ।🙏🙏

[AdityaYadav-jdly]

27:23
Answer of hw question will be
-2r/3(4-π).

[Gzrigel]

The answer to the last question is 2r/3(4-pi).
Thank You Sir. The entire topic of Centre Of Mass including Conservation of momentum and collision is finally done. I am extremely happy today . Thanks a lot Sir.

[azmiumar]

✓ 26:39 Solution=

•Ycom= 0

•Xcom=
= {(2r×r)(-r/2) - (πr^2/2)(-4r/3π)} ÷ {(2r^2) - (πr^2/2)}
On solving above eq. you get__
= -2r/3(4-π)
Then,
Position of COM
{-2r/3(4-π), 0}

[musicophile]

Ans of the HW is 2r/3(4-π)...thank you sir for this good video...pehle to yeh topic mujhe samajh nehi ati bt after watching this video I never forget the whole concepts..🙂

[reshmavesuwala]

Sir, your methods & logics are superb.. You are the one who is making physics easier & easier for us.. Thank u so much