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If floating were easy, everyone would do it! How does the Coanda Effect work? A video from a fascinating physics playlist shows how balanced upward and downward forces float a ping pong ball in a stream of air.
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CCSS:
Adaptable
Additional Tags
Instructional Ideas
- Perform the demonstration live and have pupils create their own explanations; watch the video and have them check their work
- Provide a few hair dryers and let the class try to float a ping pong ball themselves
Classroom Considerations
- Be sure to cover forces, inertia, and viscosity before introducing the Coanda Effect
- This video is hosted on YouTube
Pros
- The narrator explains the phenomenon clearly
- Force diagrams show the forces acting on the ball throughout the demonstration
Cons
- None