Bernoulli's Principle and Lift

Question 1

lift

Answer 1

• Refers to the component of force that acts perpendicular to the direction of flow
  
  • Will act at a right angle to the direction of motion
    (can be down and up)
  • This occurs only in objects that are spinning or not perfectly symmetrical
  • Lift is created by pressure differential on opposite sides of an object due to fluid flow past an object

An airplane wing creates lift in an upward direction
A racing car creates lift in a downward direction

Question 2

Bernoulli’s principle

Answer 2

• Relates to the pressure created from a moving fluid over an object, whereby fast flowing fluid produces a low-pressure area and slow-moving fluid produced a high-pressure area
  
  • High velocity = low pressure
    Low velocity = high pressure

objects moves from high pressure to low pressure, meaning wherever the high velocity is is the direction of the lift
plane wing has high velocity on top, meaning high pressure underside pushes up, creating lift