Another important physics principle in SPM is Bernouli principle. For those who hates doin physics' calculation, Bernoulli will be a gud news for u coz no formula is involved at this stage. However u really need to grab a genuine understanding on its concept.
Ok..what is Bernoulli Principle ??
In simple words Mr Bernoulli stated that..
"if the velocity of fluid increase, the pressure decrease"...
Bernoulli is one of the fascinating physics principle & yet it's easy to understand..it relates the effect of fluid velocity on pressure.
..if u notice, the term fluid is used just like in Archimedes..
just to remind those yg dah lupa, fluid means 'benda mengalir' i.e it can either be air (gas)or liquid.
Common mistakes among students, they always think that pressure causes the increase in velocity. In fact it is the movement of air or liquid velocity that causes the change in pressure.
Here some cool & interesting lectures which i collected from the net. If u understand nothing on bernoulli,you must watch these videos to clear the air :)
Besides knownig the principle, in exam u must be able to apply and explain the bernoulli effect on venturi tube, floating ball, water sprayer, aerofoil etc.
Lets analyse the video about water sprayer below..can u explain why the water rises ??
Another interesting facts about bernoulli, it allows an aeroplane gain its lift force from the wing's aerofoil shape. If u intersted to further study in aerospace or aeronautical engineering, u need to fully understand the working principle of an aerofoil.
Look at this video..even this cute little girl can explain the aerofoil concept.. i think u should be ashamed of yourself if u r still too lazy to think about it ;)
To understand what causes different water level in venturi tube is also important aspect in bernouli principle. It always being asked in the exam. U need to fully understand & be able to explain the change in water level.
Who knows it might come out in this year SPM...so apa tunggu lagi, get your book & revise them now!!! :)
About Me
- Cikgu Ahmad
- I am a full time specialist Physics tutor operating in Klang Valley. I've been educating student for more than 10 years. My specialty is to transform student that had failed their physics subject into a better result. Even some of them managed to get an A in their final exam, You can read their testimony in this blog. I provide home tuition for physics subject to those living nearby KL especially around W.Maju, Ampang,Melawati and Setiawangsa. At the same time i 'm giving online tuition to all malaysia & overseas student. For tuition centre looking for a physics tutor, i'm also able to give seminar and conduct weekly classes. Meanwhile,for school teachers who are organising physics seminar, i am happy to assist u in that aspect. If u have enquiry on my service, do contact or whatsap me at 017-2877589 or email me at celikfizik @ gmail . com
2 comments:
Like the post. :).. Force and Pressure and Heat in form 4 syllabus is easy to understand :).. my favourite^^!
hot air balloon is easy :)
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