Question

The lift of an airplane is based on

• A. Torricelli's theorem
• B. Bernoulli's theorem
• C. Law of gravitation
• D. Conservation of linear momentum

Answer 1

The correct option is B Bernoulli's theorem

Air moving over the curved upper surface of the wing of an airplane will travel faster and thus produce low pressure region than the slower air moving across the flatter underside of the wing. This difference in pressure creates lift which is a force of flight that is caused by the imbalance of high and low pressures.