Confused with static pressure and total pressure and Bernoulli's eq

AI Thread Summary
The discussion revolves around the confusion regarding static pressure, dynamic pressure, and Bernoulli's equation in the context of an airplane's wing. The user is trying to calculate the pressure at a point on the wing where airflow velocity is 70 m/s, while the airplane's velocity is 60 m/s. The provided solution indicates that P1, the pressure at the airplane's altitude of 3 km, is the static atmospheric pressure of 7.0121 x 10^4 N. The user is unclear about why this value is used instead of the pressure corresponding to the 60 m/s airflow velocity. Clarification is sought on the definitions and roles of static, dynamic, and total pressure in this scenario.
degredationz
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hi all, am a confused-being after trying to solve this really simple question..
somewhere somehow my concepts are just not right ):

Consider an airplane flying with a velocity of 60m/s at a standard altitude of 3km. At a point on the wing, the airflow velocity is 70m/s. Calculate the pressure at this point.

By using p1+1/2(rou)(v1)^2=p2+1/2(rou)(v2)^2 and the standard atmospheric pressure table, the given solution is
7.0121 X 10^4 + 1/2(9.0926X10^(-1))(60^2)/2 = P2 + 9.0926X10^(-1)(70^2)/2
I do not understand why P1 = 7.0121 x 10^4 N (given in the table), where P1 should be the pressure at the point of the flow where velocity is 60m/s.
What is the pressure given in the table referred to as?
I am confused with static/dynamic and total pressure!

Would any kind soul please help?
Thanks a lot in advance!
 
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