Physics- a game of assumptions

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Posted By : Prashant Singla, Class 10, GOODLEY PUBLIC SCHOOL

We all very well know that physics is an important aspect of science but have we ever tried to look beyond the theories taught to us?

No., Actually not.,we all think that science means facts and facts are necessarily true but at the same time we deny the fact that every law and formulae work only under a specific conditions which are nearly impossible for a human to achieve or live in.

Let us consider an example of gravitation we all might have studied in class 9th. First of all answer some questions:

1. Has the acceleration of any object falling freely ever found to be 9.8 or around?

2. Is it possible to live in vaccum?

3. How can we measure mass of earth?

4. Why are we able to sit still when everything around us is exerting some attractive force on us ?

If one tries to answer these questions he would get to know that all these human made laws are just assumption which have no verification or proof in real life.

We must realise that science is not all about facts instead it is a method of reasoning logically. Therefore it is clear that everything taught us is not necessarily always true in real life.


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Garima Chauhan

“All of science is nothing more than the refinement of everyday thinking.”
-Albert Einstein
1 & 2) You are right in saying that acceleration by gravity is affected by air resistance and we cannot live in vacuum but yes gravitational acceleration has found to be around 9.8 m/s^2 when we decrease the amount of air resistance.
3) This is calculated with the knowledge of mathematics and the law of universal gravitation.
4) The net force applied on us by other objects is completely negligible as compared to the earth's gravity so we don't feel this force.
I have tried my best to answer these questions and I hope it helps. I would also like to say that though there needs to be some approximation while applying physics into everyday life but if physics wasn't capable of explaining our world then we would still have been living in Dark Age.

Posted on : 17-08-2017 09:38:47

Manuj Jain

Of course its right that physics paves the way to life but its just that science means a theory which can help and not the conventions .if it would have been right than these laws would have proof.

Posted on : 20-08-2017 11:14:29

Prashant Singla

when we are decreasing resistance we are again creating assumptions.then what would remain manuj said these laws do not have proof ..taking an an other example is the refractive index of air and vaccum same? no,then why do we consider it same ? just far the ease of humans ...which is not right.

Posted on : 20-08-2017 11:20:33