WHAT FORCES GET AN OBJECT OFF THE GROUND?

Videos:

The Aerodynamics of Flight

Ep. 5: How Airplanes Fly | The Four Forces of FLIGHT!

Text pages: 74-77

Weblinks:

What is Lift?

https://learn360.infobase.com/titles/42668/segments/105660

https://learn360.infobase.com/titles/42668/segments/105667
Understanding Lift

Bernoulli's Principle

Articles:The Properties of Air

The Four Forces of Flight

The Physics Behind Flight

Bernoulli’s Principle

• Experiments:
  1.Using the box fan, hold one hand flat against the blowing stream of air. You should be able to feel the air blowing, but it shouldn’t be pushing your hand up or down. In other words,it’s not creating lift.

• 2.Now, tilt the front of your hand slightly upward. You should feel it start to rise. This is lift! Background Information Every vehicle, whether it is a car, truck, boat, airplane, helicopter , rocket or even akite, is affected by four opposing forces: thrust, lift, drag and weight. It is the job of the vehicle’s designer to harness these forces and use them in the most advantageous way possible, providing the vehicle's operator with an efficient way to control the vehicle.For example, a rocket needs to overcome the effects of weight and drag, while a kite needs to balance all four forces.