Saturday, 14 April 2018

learn Physics Free best concept

Education for all Physics and Telecommunication technology Free best concept

The Education Big Message of this Website must read !!!

The Education system is not good, The concept of education is not good, The education importance is not good.You will ask why? Then I will ask a question. How many Peoples get up in the morning as a intention that today I will learn something new. Can you answer the question? Well I can answer as per survey record only 6% people have intention every day to learn something new. Now important point, why such a less percentage of people? The answer is most of the people have no purpose of life and education importance.
All behind this is true meaning of education system is not good, Lets to elaborate this, The teaching style of teachers are not good and that is reason students are not participate in the class actively. Students are not getting interest in whatever they are learning.

Concept of Education

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Education Importance
Teachers inter in the class room and just write down the menu of syllabus, you have to study in this subject xyz  and will be cover one by one without giving any practical application and uses of any topic of the syllabus menu. Incompetent faculty in colleges, Actually colleges are now became business for more profit they hire low salary base faculty, This is education system . This is true meaning of education, This is the concept of education . Believe me that is the main reason students don’t participate in the class actively. Because they don't know the importance of education they are studying.

Well Student level of preparation and level of aspiration ground and sky gap. Today education is for degree not for knowledge .Well filled mind not well formed mind and this well filled mind will give you nothing.Incompetent faculty teaching with conversational theoretical classroom based approach. 
Students don’t know why they are studying this topic and what they are studying in this topic, What is the practical uses of that topic in life. You can ask this question but most of the student don’t know what they are studying and why they are studying.
Where they can use this knowledge in their daily life .This is main reason of confusion in study and life.  
Their goal is not clear, what to do and what they can do better.
Instead of giving the education syllabus menu, Teachers should emphasizes the practical uses and applications of the topic before teaching that topic. So that teachers can attract the attention of Students in the class room .
Due to this type of education system students are just memorizing the things or topic not understanding the things or topic fully. So Confusion continue in study and life.
To make education learning practical, application and its uses in life it will require more effort from each of us to change the present education system.
So I am doing my effort in the field of Physics and Telecommunication technology please come and join this effort to make it successful .So that when everybody get up in the morning as an intention to learn something new and that percentage will increase from 6%  then successful person percentage will increase in the world.
I don’t know what do you mean by success ? but my opinion Success is freedom, your own choice of your life. Do what love to do, it will give you success in your life.   
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Share Knowledge of science Physics and technology Telecommunication to Society those who want to learn concept of Physics and Telecommunication in easiest way free of cost you will never forget as simple and practical .If you hate Physics and technology there may be some reason to hate and it is as simple you have not studies the way your brain want to accept.you have learnt from wrong teacher. after a long experience here i will teach you the way you never study before and never thought Physics is as simple.it will be Physics magic, each and every topic will be covered with key concept in depth analysis based upon the facts and experience close visualization

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Study of Nature 

Sunday, 8 April 2018

understand our physical world

Understand our physical world 

This is first chapter of XI class Physic Physical world this chapter is starting of Physics so it is very important to understand first chapter because "well began is half Done". This is small topic but important from concept point of view and basic understanding pillar of Physics so lets start what is in this chapter.

Physical World meaning world of Physics ( Physics Ki Duniya )   
Very First Welcome you Physics World

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Understand our physical world 

Saturday, 7 April 2018

How to study physics right direction

How to study physics right direction 

We will see here the right method of physics study so that it will be easy for our study physics very interesting
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How to Study physics


Wednesday, 4 April 2018

Know Important concept for Force

Know Important concept for Force

What we study maximum in Physics ?

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Know Important concept for Force 

Sunday, 1 April 2018

gravitational force and gravitational constant

Gravitational force and Gravitational constant

Today our topic is very important and interesting because you will know the fact of gravitational force, which you will be not knowing before,Here you will learn hidden facts of gravitational force,I hope that you will enjoy this topic to know the hidden concepts of gravitational force. Here in this topic your all doubt and confusion will be clear, After reading this complete post, I ensure you will feel that you have learned some hidden concepts about gravitational force, which you were not learned before, so lets start to know gravitation force facts.
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Gravitational force 

Gravitational Force law history facts 

As you know and learned by your teacher saying that an apple was fall on head of  great scientist Newton, He did not ate that apple but started to think , Why did this apple fell down on the Earth ? And after that this gravitational force law was invented by Newton.
This is wrong story but trended in society, You can think and imagine yourself that due to an apple fall no body can make a big universal truth law. This law was not made by a simple apple fall, You can search on Internet the history of gravitational law, This is documentary type of topic, If i will explain in details then this post will become very long, So in short and important contribution of all scientist to develop gravitational law will discuss.
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conservation of momentum

conservation of momentum

Conservation of momentum is very important topic of Physics because conservation of momentum concept state second law of Newton.We will see how Newton's law was derived from conservation of momentum.In our previous post we have already studies about conservation of momentum formula and its basic concept, You can refer the previous post for basic concept and definition of conservation of momentum concept for conservation of momentum. In this topic we will cover the application of conservation of momentum as well as its numerical problems.So lets start.

Conservation of momentum for a system

Linear conservation of momentum, we know that any rigid bodies system is made by collection of many small particles, Take an example of rotating wheel of a car, Another example rotating ceiling fan.

When we observe this rotating bodies, Then we found that there are many small particle, Which are rotating with different speed in different radius.
If anybody ask find the speed of the rotating wheel,Then what will be your answer, Which small particle speed you will answer this is really difficult, So to make this simple, we answer the speed of center of mass of the rigid body.
Because whole mass of the rigid body is concentrated at the centre of mass. we have already learn in previous post . So whole body is consider as a system and its internal small particle conservation of momentum gives the whole body conservation of momentum.
We will see how these two conservation of momentum is same, just wait see the below picture.
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Conservation of momentum

In Centre of mass post we have studies that how to find the centre of mass for small point mass, So i am just using that concept.
We know that centre of mass general formula is given as rcom (centre of mass) .

rcom  = (m₁r₁+m₂r₂+m₃r₃+......................+mₙrₙ)/(m₁+m₂+m₃+................+mₙ)
Now  differentiate this equation with respect to time on both side then we will get 
d(rcom)/dt  = (m₁dr₁/dt+m₂dr₂/dt+m₃dr₃/dt+..............+mₙdrₙ/dt)/(m₁+m₂+m₃+..........+mₙ)
we know  dr/dt  = velocity = v so we can write the above equation as 
Vcom  = (m₁v₁+m₂v₂+m₃v₃+..............+mₙvₙ)/(m₁+m₂+m₃+..........+mₙ)
 Now arranging the equation we can write like this.
(m₁+m₂+m₃+..........+mₙ)Vcom  = m₁v₁+m₂v₂+m₃v₃+..............+mₙvₙ

 (m₁+m₂+m₃+..........+mₙ) = total mass of rigid body =M as shown in above picture  so we can write as 
MVcom  =  m₁v₁+m₂v₂+m₃v₃+..............+mₙvₙ now as shown in above motion picture momentum of different small particles m₁v₁, m₂v₂, m₃v₃  hence If we want to write momentum of the system can write  Psystem  = MVcom . p = mv

Whenever we want to write momentum of a rigid body then we take whole mass of the body and velocity of centre of mass product as state above.Hence now we can write 
→               →  →  →                            →
Psystem  = p₁+p₂+p₃+........................+pₙ

Hence total momentum of a body is equal to vector sum of momentum of individual particles.

What is meaning of collision in physics

What is meaning of collision in Physics?

Collision is important and interesting topic of physics, If you have already studies previous post like centre of mass, conservation of momentum and your concept is clear then you will enjoy learning collision. We will study from basic concept of collision to depth concept of collision step by step in easiest way so that you can understand complete concept of collision, don't worry your all doubt and confusion will clear about collision and you will learn some new concept of collision in this post. If you don't know about conservation of momentum then i will suggest you to refer post conservation of momentum concept  so lets start collision.

What is meaning of collision in details?  

The meaning of collision in Physics is not like that two bodies collide together.The real meaning of collision is if any one body velocity effect the other body velocity or one body momentum effect other body momentum, it is not necessary to collide with other body but effect the momentum of other body is called collision. 
But in our syllabus all question will be based upon the collide cases in which the momentum will exchange.So collision is an event in which two bodies strike each other applying large force for a small time.
So all the story of collision will be based upon the momentum, Hence any kind of collision you will apply conservation of momentum to the system, Why system ? because a single body can not collide itself at least two body required so two body system.
Hence the initial momentum of two body will be same as final momentum of two body and will also be same in between initial and final position.

So momentum remains conserved throughout the collision 
We see example of collision in day to day life like when we drop a ball on the ground it reaches the ground and strike the ground then bounce back to some height. The time at which ball strike the ground that event is called collision see below picture.
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