a plane is in level flight at constant speed and each wings of area 25M2. if the speed of the air is 50m/s over lower wings and 65m/s over upper wings,determine the mass of the plane(density of the air=1kg/M3)
Speed of air over the lower wing, V1 = 180 km/h = 50 m/s
Speed of air over the upper wing, V2 = 234 km/h = 65 m/s
Density of air, Ï = 1 kg mâ3
Pressure of air over the lower wing = P1
Pressure of air over the upper wing= P2
The upward force (F) on the plane can be calculated as:
Hence, the mass of the plane is about 4400 kg.