AIM OF THE EXPERIMENT: To determine how the position of the wings decides which way the helicopter turns.
MATERIALS: the paper helicopter from the experiment "The helicopter".
MATERIALS: the paper helicopter from the experiment "The helicopter".
Изображение
Hold the helicopter above your head and let it go.
See which way the helicopter turns.
Bend the wings the other way and launch the helicopter again.
RESULTS: The helicopter turns anticlockwise when the right wing is bent towards us, but it turns clockwise when the wings are bent the other way.
WHY? When a paper helicopter falls, the air escapes from under its wings in all directions. The air pushes one wing forward, but it also pushes the second wing, and as a result the helicopter spins. The picture shows the direction of motion. METHOD:
See which way the helicopter turns.
Bend the wings the other way and launch the helicopter again.
RESULTS: The helicopter turns anticlockwise when the right wing is bent towards us, but it turns clockwise when the wings are bent the other way.
WHY? When a paper helicopter falls, the air escapes from under its wings in all directions. The air pushes one wing forward, but it also pushes the second wing, and as a result the helicopter spins. The picture shows the direction of motion. METHOD: