This airplane launcher uses stored energy in a stretched rubber band to launch a paper airplane forward. When released, the stored energy turns into motion, sending the plane soaring through the air. Along the way, forces like gravity, air resistance, and lift affect how far and high it flies. Experiment with different plane designs and rubber band tensions to see how they change the flight!
Materials needed:
- 1 Craft Stick
- 2 Small Rubber Bands
- 1 Paper Clip
- 1 Piece of Paper
This airplane launcher uses several forces to make the airplane fly. Here are the key forces at work:
Stored Energy (Elastic Potential Energy)
- When you pull back the rubber band, you stretch it, storing energy inside it. This is called elastic potential energy because the rubber band wants to snap back to its original shape.
- The more you stretch it, the more energy is stored!
Force (Applied Force)
- When you let go of the rubber band, all the stored energy is quickly released.
- This creates a strong force that pushes the paper airplane forward.
Motion (Kinetic Energy)
- The force from the rubber band turns into kinetic energy, which is the energy of movement.
- The more force you use, the faster and farther the airplane will go!
Air Resistance (Drag)
- As the airplane moves forward, it pushes against the air. This is called air resistance or drag, and it slows the airplane down over time.
- A smooth, well-folded airplane will have less drag and fly farther!
Gravity
- Gravity pulls the airplane down toward the ground.
- A good design will help the airplane glide longer before gravity brings it down.
Lift
- If the wings are tilted slightly, the air flowing under them can create lift, which helps the airplane stay in the air longer.
- This is the same force that helps real airplanes fly!
By adjusting the rubber band stretch, airplane design, and wing angles, you can experiment with these forces to make your launcher work even better! ????✈️