Ballistic demonstration
thingiverse
This is an Interactive Physics Demonstration for Ballistic motion. It's designed as a teaching tool only, so handle with care. Please exercise caution when using the Device. Do not aim it at people, animals, or windows. Preparation and equipment are listed below: 1. A 3D printer and PLA filament. 2. A Contraction Spring from a broken umbrella with a spring diameter of 2cm and length of 6cm (it's about 50N/m) - usually part of a long adult umbrella. 3. An M4 bolt that is 4 cm long and has a nut. 4. An IKEA L wrench. 5. Two M5 bolts (IKEA) that are 2 cm long. 6. A 20mm ball. 7. A fill and screwdriver.
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