Answer to Question #259666 in Mechanical Engineering for Jool

Question

A pilot notices that the barometer pressure outside his aircraft is 800 mbars. The airport below the plane reports a barometric pressure of 1020 mbar. If the air density averages

1.15 kg/m3 and the local gravity is 9.70 m/s2, determine the height of the aircraft above the ground, in meters.

Answer 1

P_plane = barometric  Pressure

$\rho =$  air density

g = local gravity

h_plane = height of the aircraft above the ground

$P_{plane} =\rho gh_{plane}$

$h_{plane} =\frac{\rho g}{P_{plane}} = \frac{(1020+800)\times100}{1.15\times9.70} = 16.31km = 16315.55 m$ from Ground