Question -
Answer -
The area of the wings of the plane, A = 2 × 25 =50 m2
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, ρ = 1 kg m–3
Pressure of air over the lower wing = P1
Pressure of air over the upper wing= P2
The upward force on the plane can be obtained using Bernoulli’sequation as:
The upward force (F) on the plane can be calculated as:
Using Newton’s force equation, we can obtain the mass (m)of the plane as:
∼ 4400 kg
Hence, the mass of the plane is about 4400 kg.