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 ?
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.