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the principle behind not being able to open the car door is Bernoulli's?
Seems unlikely, Bernoulli is to do with fluid flow, and you're probably not trying to open the car door while moving. Also, if the fluid is flowing around the car, that should lower the pressure which is holding the door closed.
when there is equalisation of pressure, the door will open? Like a canal lock gate?
Yes, you just wait for the car to fill with water and then you can get out. Or not, since opinions vary. From a physics point of view, the less the difference between the water levels inside and outside, the less force there is holding the door closed, you only have to wait until you can overcome the force. Ideally, you reach this point before the water gets to nose level🙂
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and didn't exactly set the Engineering faculty alight
well, to be fair, water extinguishes simple fires.
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gbj_tester
mespilus
@Ben689908
Isn't it the case that Pascal lets you calculate the pressure on the car door, but the principle behind not being able to open the car door is Bernoulli's?
And when there is equalisation of pressure, the door will open? Like a canal lock gate?
I only studied one module of Fluid Mechanics, and didn't exactly set the Engineering faculty alight, so I'll sit here and wait to be corrected. :D