Ballistic Demo

myminifactory

Here's the Physics Demonstration for Ballistic motion: It is designed to educate only, so please exercise caution - do not direct the device at people, animals or windows. Preparation and equipment: Get a 3D printer and some PLA filament. Use a contraction spring from an old umbrella with a diameter of 2cm and a length of 6cm (it's about 50N/m). Most often it is part of a large grown-up umbrella. You will also need an M4 bolt that is 4 cm long, along with a nut. Make sure to have an IKEA L wrench on hand too. For the projectile component, use two M5 bolts (IKEA) each 2 cm long. You'll also require a 20mm ball and a fill as well as a screwdriver.