This lesson will introduce students to the essential concepts underlying the principles of 2 dimensional dynamics in a gravitational field. Along with the study of dynamics, students will construct either medieval catapult, ball free throw, or custom launching device and use qualitative data to analyze the two dimensional motion of a projectile in Earth’s gravitational field. Students will use digital fabrication in the final designs and document their process using video documentaries. Students will then demonstrate their design process, final design, and functionality of the launching device in a Catapult Challenge Competition.
Soda Bottle Cap
Small Bouncy Balls
As an introduction, students will construct a catapult designed and built out of pencils and other common office supplies.
Follow the directions to build a catapult using office supplies.
As a first prototype, students will use 3D software to design a launching device.
4 drawing images: http://www.technologystudent.com/designpro/ortho1.htm
Small scale 3D model, no bigger than 8 inch cube Materials: Cardboard, string, 2 dowels, glue, rubber bands, springs Functionality - swinging arm, carries an approved payload (marshmallows/ping pong ball) Structurally sound - self-standing structure Catapult only: frame and base, fulcrum, swing arm, payload in basket, spring/torsion device.
As a second iteration, students will scale up and adjust the previous design to build a better performing device.
As an option, students can continue to refine their design and construct their device out of MDF using a laser cutter.
Catapult Design Fiberboard Carvey Requirements: