Pulley With 608 bearings

thingiverse

The model here contains the basic pieces necessary to create a simple, double rope pulley system. The purpose of this is to provide a thorough demonstration on the force of gravity and friction in action. This hands-on activity also helps give students a firm understanding of how the pulley helped innovate society. Print Settings Printer: DaVinci 1.0 AIO Rafts: Doesn't Matter Supports: Yes Resolution: Any resolution will work. Infill: 100% Notes: Watch out for layer separation, which can extremely weaken parts. If using ABS, always account for shrinkage and avoid warpage. Post-Printing If printed in ABS, an acetone vapor bath will strengthen parts, but it's not necessary. However, I advise against doing the acetone vapor bath procedure near students. How I Designed This Design I designed this model using Tinkered, Meshmixer, and 123D software. Standards NGSS Overview and Background Introduction The purpose of this activity is to help students understand the concept of energy transfer and the effects of friction on a stationary object. This hands-on experiment will enable students to grasp an understanding of scientific concepts. Feel free to add extra information about the action of the pulley and its effects during the lesson. Lesson Plan and Activity Experiment Set up the pulley system, have each student pull on the rope, and do it once with a bearing and once without. Students will be able to see the difference. Explain that the bearing reduces friction, making it easier for them to move the pulley. The depth of explanation depends on grade level. Add a very light weight to the end of the rope so there is some tension on the rope. Materials Needed Materials To create this model, you will need two 608 bearings, some rope, and a counterweight for the rope (of course, a printer is also necessary).