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Emne: Math help please |
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Okay, here is one for the maths gurus on the forums.
I have the following formula
https://i.imgur.com/h8v2KSo.jpg
Can one of you smart people help me solve the formula for P0?
As in P0=???
Any help greatly appreciated, :)
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#2 Skrevet Dec 10 2018, 02:43:32
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#3 Skrevet Dec 10 2018, 02:48:37
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5.257
/ 0.0065 h \
P0 = P x | -------- + 1 |
\ T+273.15 / |
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#4 Skrevet Dec 10 2018, 02:48:44 (senest redigeret Dec 10 2018, 02:53:08 af Mike Bennett)
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it is either 1 or 0 , or maybe 5.257 if I bothered to actually work it out :)
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#5 Skrevet Dec 10 2018, 02:50:07 (senest redigeret Dec 10 2018, 02:52:54 af Lyee Chong)
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P0 = 10^(5.257log(((0.0065h)/(T+273.15)+1))+log(P))
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#6 Skrevet Dec 10 2018, 02:50:24
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#7 Skrevet Dec 10 2018, 02:53:22
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Yeah you guys beat me to it. I think I'm a bit rusty at this insane maths.
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#8 Skrevet Dec 10 2018, 02:54:17
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Jasper the mathematical genius to the rescue again 😊
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You're welcome.
I kind of understand what's going on (calculating altitude based on a pressure and temperature measurement) but I don't know where the power of 5.257 comes from. :) Something with gas laws I guess?
Edit: Lyee's solution is also correct, by the way. But maybe slightly more convoluted :p
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I forgot we can simply "power" the both side :)
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thanks folks, appreciate the rapid and helpful replies :)
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Quote ( Jasper Coosemans @ December 10th 2018,02:58:49 ) You're welcome.
I kind of understand what's going on (calculating altitude based on a pressure and temperature measurement) but I don't know where the power of 5.257 comes from. :) Something with gas laws I guess?
It is related to building an Arduino altimeter for this project that I am working on.
https://www.youtube.com/watch?v=uTWVO9AMYKc
:)
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Ooh fun stuff! :) We did a water rocket project during our first year at uni but it was without the parachute or other fancy stuff. That's impressive. :)
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I just wonder what you guys like most.. that maths stuff or shooting rockets ;)
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Quote ( Jay De Snoo @ December 10th 2018,04:13:39 ) I just wonder what you guys like most.. that maths stuff or shooting rockets ;)
Both! :)
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