Question

What is the principle/relation that is being used in the take-off of aeroplanes?

• A. Velocity-pressure relation
• B. Temperature-pressure principle
• C. Pressure-density principle
• D. Temperature-velocity relation

Answer 1

The correct option is A

Velocity-pressure relation

The pressure of air reduces when it moves fast. This principle was explained by a scientist named Bernoulli. The wings of a plane are designed in an aerofoil shape such that the velocity of air above the wings will be more than the velocity of air below. So, there will be a pressure acting on the wings in an upward direction (from the bottom of the wings to the upper region). This thrust helps the plane to take off.