Basics of Pressure..😱 (Part 1: P=F/A)

Dear friends,

Its time to now understand what the pressure is all about. let us consider the volunteer (Adnan) has some mass (say 50Kg) and you all know that weight is nothing but the force acting on our body from earth as a normal reaction force i.e. newton’s 3rd law (ACTION-REACTION). Therefore F=500 N i.e( F=mg, let say g=10m/sq s) and let us assume that one balloon has an area of 2 sq m. (😂 2 sq m it’s funny ha).

**In this image (1) the volunteer is sitting on the top of one balloon *(Black color)* only**.

so, in 1st image you can see tha adnan’s force of 500N is acting on an area of 2 sq m. which gives pressure of 250 N/sq.m

i.e. P =F/A

= 500N / 2 sq.m

= 250 N/ sq.m——-equation (1)

i.e pressure of 250 is acted on one balloon only.

**In this image (2) the volunteer is sitting on the top of four balloons.**

Now, in the second image the force is again same i.e. F=500 N because of same person (adnan) is sitting on the 4-balloons, but the area has become changed due to four balloons i.e. A= 4*2 sq.m . Therefore the pressure acting of a balloons is 62.5 N/sq.m

i.e. P =F/A

= 500N / 8 sq.m

= 62.5 N/ sq.m———-equation (2)

so, Guys 🙂 finally we have reached towards the final conclusion i.e. if you see both the equations you will conclude that the pressure acting on a balloon is heigher in the 1st case (with one Balloon only) and the pressure in 2nd case is laser (with 4-Balloons). Hence the chances of brusting the balloon is more in 1st case.

finally the conclusion is if the same Force is applying on small area (one Balloon) then balloon feels more pressure and finally brust and if that same force is applied over larger area (Four balloons i.e. pressure is equally distributed) boleto balloons will feel lesser pressure…

Important units of pressure:

N/sq.m or Pascal
atm & 1 ATM =10^5 pascal
Earlier the bar is used as unit of pressure but now it is standardly replaced as atm.

some daily life examples of pressure😜:

When we chop the vegetables with sharp edge knife ( 🔪 ) it can be easily chopped, but if we chop it with blunt (Bina dhaar wala) knife, vegetables cannot be easily chopped
If you stand on a single nail 😬 then guys no need to explain it, you know the scenario but if you stand on a bed of nail, you feet will get an excellent massage😃