Force best definition is here ?  If you want to know, What is a simple definition of force ? then you are at right place. Because i am going to disclose, the hidden concept about force in this topic.  So it may be possible, you are not learn this concept before.
Hence read complete post to know the hidden concept about force. Therefore i ensure  that, you are going to enjoy this topic, because you will get hidden concept about force. So let me start, What are you going to learn new here ?

What is a simple definition of force ?

What is a simple definition of force | Know Important concept for Force
Well do you know ?  what do you maximum study in Physics ? common This is force. So if you want to learn Physics. Then your concept about force must be clear. And hence i am here to give you that hidden concept about force in this post.

What is force short answer ?

So now let me explain, what is force in Physics world ? You have studies in previous classes some idea about force.  Just recall force is push or pull. And what is meaning of push and pull? Newton has written in his book about push and pull.
But Newton was worry about pull.  Because there is no any pull force.  For an example, when you open the door, then you apply force from front. And this is called push. In other case, when you apply force from back.
Then you say pull.  But wait in both the cases, actually you are pushing.  So just open your eyes. You will understand this, when you pull the door. What you are doing here, think over it, you put your hand, inside the handle of the door and pushing the handle of the door. 
Hence force only depend upon point of contact.  So here in door case point of contact is same. For push and pull. Because at same contact you push and pull the door. If you are having any doubt.  Then what can you pull,  just give me any example.
So you can’t give any action, in which there is purely pull.  But just wait  take an example. When you drop a ball, vertically and that ball come down to the Earth. Can you tell me, what is this pull or push ? common this is pull. i hope you got, what is force ?. 

What is an example of a pushing force ?

Because Earth is pulling, and this is an example of pull.  But scientist Einstein was worry, Why if there is no push, then how ball is falling to the Earth.  And then he made a space theory, Which explain that, in the Universe, there are two things. Hence he told, one is material and other is sky.
So when you take a ball in your hand. Then Earth pushes that ball, and sky also  pushes that ball. But since sky force is greater than, Earth force. Therefore ball come down to Earth. And this is according to modern physics.  Where it is difficult to understand for all.
But don’t worry. Here you need to study classical Physics.  Which is before 1900. And after 1950 modern physics is introduce.  So in 11th class,  you need to study Classical Physics only.  But In 12th class, you will study about modern physics.
Therefore in Classical Physics concept, every object interact with each other in this world.  And this is called force.  So this may be push type or pull type. So when ball is falling under gravity is consider as pull force.  Because Earth is pulling ball.
So that space type theory was not available that time. Hence how many types of forces in classical physics.  Take few examples you study . There are many types of forces. Suppose when  flood came and due to this wall is broken. So this is type of water force.

What do you mean by force give examples ?

you study a man pushes the other man.  And fall on the ground, this is type of muscular force. Again car was running on the road, and  off the engine, then car is stopped.  This is due to friction force.  When you jump in the water, and come up from the water, this is bouncy force. And a iron ball is drop, just  it goes into the water, but when a light plate is just, kept on water it does not sink into water.  this is surface tension force , and many more example of forces.
now what is law in physics study Unification. which is well explained previous maximum phenomenon can be explained.  in a single law so no need to made many force only a single force will explain all these phenomenon. then it will be easy for our study.
scientist has view from starting there should be only a single force through which all the phenomenon can be explain. but all forces are different. how it will be possible to explain through a single force. so  scientist tried to categories sources of different forces. and minimizes force .
lets see a ball falls on the earth this is gravitational force, moon rotate around the earth. this is also gravitational force, earth rotate around sun, this gravitational force, sea water confined in sea does not come out on the road. this is gravitational force each phenomenon try to explain and solved as a single gravitational force. half of the phenomenon in nature was solved by gravitational force.

What are the 4 types of forces ?

now similarly half of the phenomenon was solved by electrical force. when two bodies come in contact then electron exchange between them, one become positively charge and other become negatively charge. wait which body will be negatively charge, it depend upon electron affinity now this two body will attract each other.
friction is electrical force this appears due to, exchange of electron.white washing is also type of electrical force, in this manner scientist analysis all type of forces, and finally come out the conclusion either, it will be a gravitation force or electrical force.  then it was declare that there is only two type of forces through which, all the forces phenomenon can be explain.
now it became easy only two forces, now it was only to search the way of force source, if electron exchange then it is electrical force. take an example viscosity force is also an example of electrical force. now finally scientist were happy having only two forces. but latter on when modern physics introduce.
scientist were study about atom now study of atom found that in an atom there is a nucleus proton, electron proton present in nucleus electron moves in outer orbit proton has positive charge electron has negative charge.

What are the four forces?

Rutherford model about atom explain that proton lives in nucleus. now problem create here all proton lives in nucleus, all proton having positive charge, then there should be a big repulsive force between proton plus charge, repeal each other since electrical force is stronger than gravitational force.
but through experiment it was seen, that many proton living with, each other without any repulsion. how it is possible. now scientist were worry not to explain this force, neither through gravitational nor through electrical force. finally not able to explain then scientist give this third force name “nuclear force”.   since this force is present inside  nucleus. science positive , positive charge was unable to repeal each other. its mean that nuclear force is stronger than electrical force.
after that atom bomb made and nuclear blast, now all scientist concentrated on nucleus study breaking the nucleus and try to find out the smallest particle in nucleus. through which atom is made molecules is made and this universe is made. searching for that smallest particle. some time scientist think atom is smallest particle.
some time molecule, some time nucleus, some time electron confusion was there where it will be last no ideas but continue in search of that smallest particle. Scientist has finally claim that we have found that smallest particle and given name “God particle”. because God has made this nature.

What are types of force?

Now after breaking nucleus all nuclear particle like alpha, beta, gama, meso, these particle also interact with each other but their force is weak in comparison of proton proton nuclear force so finally its name is weak nuclear force and proton proton force is strong nuclear force hence we have finally four forces for study in Physics.
that is in universe in macroscopic study gravitational force and electrical force and in nucleus weak nuclear and strong nuclear force. latter we will study in details about these four forces.basic review gravitational force cause is mass heavy mass having large gravitational force. electrical force cause is charge heavy charge having large electrical forces.
its range is up to infinity means existence in whole universe or both forces are called long range force. nuclear force range is 10^-7m only. nuclear forces are called short range forces.In nature or Physics we study these four forces.Now i hope that force concept will be visualizes. 

Energy Conservation Laws:

What is Conservation laws ? our philosophy is combined with conservation laws.
Energy Conservation Laws
Energy Conservation Laws

This philosophy indicate us we are not God we are nothing how we are nothing ? its mean that we can’t lift any think by our force we can’t displace anything by our force. we can’t make anything we can break anything this is like Gita discourse. but it is true.this is discourse of Physics. God and Physics little bit difference because Physics is Study of Nature.
And God has made this Nature so we study Nature. which is made by God.Hence when scientist got ultimate particle its named as God Particle. In this manner Physics teaches us we can’t made we can just transfer it.  like whatever energy is available in coal it can be transfer to heat energy process is to combustion of coal.
And transfer it to heat energy and to steam to pressure on turbine bled rotate generator and make electricity but think without providing anything if told to generate your electricity can we produce electricity big no we need to take whether water,diesel, coal,or nuclear from anywhere we have to take energy then it is possible to generate electricity.

What is force in science?

here we can transform one energy to other energy like electrical to mechanical or chemical just transform. see given electrical energy to fan converted into mechanical motion to fan and fan wind energy in form of mechanical so without giving electrical energy we can’t get mechanical energy.
if you will claim i can use my hand for mechanical energy then my answer is you are giving your hand energy from your body which comes from taking food just remember when you was born you was not able to do this activity after taking energy from food you have right now energy in your body so we can only transform energy one form to other form.
it is simple energy is stored in nature we take from one place and put to other place but anytime God comes everyday and count the total energy lets 1000 energy but we have displaced one form to other form and one place to other place we can’t destroyed in night God comes and count how much it will be 1000 so this is called Conservation.
and called Conservation Laws here we are discussing about energy similar for mass one thing break and other thing will question when coal is combustion its mass is destroyed wait carbon is converted into CO2 not destroyed just converted mass is same similarly we can’t make carbon so human should understand difference between God and men.

what is force system

even we can’t make a smallest particle in nature so nature is conserved always total mass or energy will be same quantity in physics is also conserved its name is momentum latter we will study what is momentum in details but short view momentum is how fast a body is moving how difficult to stop it take an example.
four bodies are moving with different velocity and collide with each other after collusion each has moving with again different velocity but its momentum is conserved. what so far we have seen conservation three quantity mass, energy and momentum.
now how much charge nature has created we can’t create or destroyed we take charge from powerhouse glow our bulb and return it in form of light.when we rub two bodies one become positive charge and other become negative charge sum is zero.
so in universe same quantity of positive charge and negative charge exist in nature and its sum is always zero we just take charge from one body to put in other body and this is called Conservation of charges again charge is conserved.

Fundamental Rules of Physics:


Whatever the phenomenon happen in this world there must be a single cause.If any process takes place their must be a single cause what is that every object of this universe wants to continue in minimum energy level means want to spend minimum energy take an example we go to school if time for class start left is 5m school is far.
then how we will go time is minimum so run fast but time is 1hr then we like walk why because we want to spend minimum energy in walk minimum energy spend.we like to stand in bus rather than walk if we get seat .
then we not stand occupied seat so that minimum energy can spend if we long journey we like to sleep rather than seating or standing so that want to spend minimum energy we like action of minimum energy spend similarly every object of universe want to continue in minimum energy level

why we can’t create Force ?

its is fact that we cant create force then how we apply force the answer is we take force in loan how we take loan take an example when we apply force on a standing car then we stretch our body push the earth through feet backward and earth pushes us forward.
we get loan from earth and pushes the car. if you have doubt you can proof yourself just put banana rind you can’t push the car now because your contact is not with earth same your body and car but can’t push why because you are not taking loan from earth.
then you can’t give the force to car. force always create in pair here one force we pushing earth backward and earth given that force forward to our body as a loan.
Principle of Physics use to make technology:
Using Bernoulli’s theorem aeroplane technology was made.
Using electromagnetic induction electricity technology was made.
Thanks for reading Know Important concept for Force .
If you want to learn more about Physics topic . Then you can refer my previous post. This link is given below.

You can refer this book . This is best book for Physics. Theory as well as numerical are elaborated in best way. So your concept will clear .