ADHD (Attention-deficit/hyperactivity disorder) is a disorder that affects people's focus, short term working memory, and processing speed. At the University of California of MIND Institute, people diagnose with ADHD are tested to read the direction of arrows launched in the air, while also strapping on a device that measures their movement. Based on the results, "Physical activity, like bouncing on a ball chair or even chewing gum, seems to allow these children to focus on difficult tasks." ADHD can severely hinder students who are striving to participate in the classroom environment. The design team, ANBPAS Projects, will design and create a fidget spinner to allow students to be physically active in a less distracting manner.
Forces to consider:
- Air Resistance - the result of collisions of the object's leading surface with air molecules.
- Tension - force that is transmitted through a string, rope, cable or wire when it is pulled tight by forces acting from opposite ends.
- Centripetal - any motion in a curved path represents accelerated motion, and requires a force directed toward the center of curvature of the path.
Changes to account for forces:
- Add more fillets, which adds more mass and makes the air travel around the spinner smoother.
- Equal amounts of bearings on each side (symmetrical arms and bearings).
- Longer arms, a larger bearing in the middle than the outside bearings.