F / Wman = 11 and option B
Explanation:
Pressure is the relationship between the force and the area where it is applied, in the case of the airplane the difference between the outside and inside pressure is
Let's start reducing it to units, you have a very strong mix.
Pint = 1 atm (10⁵ Pa / atm) = 1 10⁵Pa
Pext = 276 mB = 276 10⁻³ Bar (10⁵Pa / 1Bar) = 0.273 10⁵ Pa
L = 14.0 in (2.54 10⁻² m / 1 in) = 35.56 10⁻² m
W = 185 lb (4,448 N / 1lb) = 822.9 N
ΔP = Pint - Pext
ΔP = 1 10⁵ -0.276 10⁵
ΔP = 0.724 10⁵ Pa
P = F / A
F = P A
A = L * L
A = (35.56 10⁻²)²
A = 1.26 10⁻¹ m²
F = 0.724 10⁵ 1.26 10⁻¹
F = 0.912 10⁴ N
This force steers the plane out
The rational difference
F / Wman = 0.912 104 / 822.9
F / Wman = 11
F = 11 Wman
The force due to the pressure difference is 11 times greater than the weight of the man, so that it does not come out it has to have a very strong friction and be supported by something to equalize the force, I would carry out the experiment, option B
5
Explanation: