Energy Conservation Lab - 3D Printed Car

by nguyenever, published Jul 21, 2016

Energy Conservation Lab - 3D Printed Car Jul 21, 2016

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Summary

Project #1 - Energy Conservation

This project involves utilizing a 3D printed car to test and confirm the Law of Energy Conservation.

The 3D model utilized is borrowed from user PetroPixel

Print Settings

Printer:

Flashforge 3D Creator Pro

Rafts:

Yes

Supports:

Yes

Resolution:

.27

Infill:

15%

Notes:

The car and parts can be scaled down based on what is needed/desired.

Post-Printing

Scaled down model. Attached wheels with paperclips.

How I Designed This

I utilized SketchUp to rescale the car files (body, pins, wheels) and utilized the slicing software Replicator G to create the 3D file to print it.

Overview and Background

Students in a physics/physical science setting will engage in a lab activity involving a 3D printed car. Students will use the lab environment to drop a measured mass (the car) down a specific height (utilize a ruler/tape measure to find desk height) to calculate potential energy. Students will be able to calculate kinetic energy by utilizing the other variables in conjunction with velocity (calculated with timer and distance). They will fill out data on the accompanying worksheet.

Objectives:
Students will be utilizing a physical system to test and confirm the Law of Conservation of Energy.

Skills Learned (Standards):
HS-PS3-2. Develop and use models to illustrate that energy at the macroscopic scale can be accounted for as a combination of energy associated with the motions of particles (objects) and energy associated with the relative positions of particles (objects).

Lesson Plan and Activity

Step 1: Debrief class on lab activity.

Step 2: Pass out worksheet

Step 3: Establish groups (3-4)

Step 4: Pass out 3D Printed Cars (fully assembled)

Step 5: Have students mass their cars

Step 6: Have students measure the height of their lab tables

Step 7: Begin the lab by having students slide cars over their tables

Step 8: Have students time the car until impact with the ground; measure horizontal distance.

Step 9: Have students take accurate measurements until data is consistent (3 tries is usually enough)

Step 10: Have students calculate potential energy & kinetic energy of their car drops (can be assisted by teacher with calculations)

Step 11: Finish worksheets

Step 12: Debrief Lab activity (go over lab worksheet and discuss general findings/trends)

1 hour lab

Preparation

The teacher MUST PRE-PRINT all the car materials and assemble them prior to the lab (1 car per 4 students)
Lab area
At least two groups (to compare data)
Scales
Timer (phone apps can work too!)
Meter stick/Tape measure
*knowledge of kinetic energy and potential energy

Rubric and Assessment

As a rule for evaluating students for this activity, one way is utilizing a 4 point scale. See the attachment below for details.

References

http://www.nextgenscience.org/pe/hs-ps3-2-energy

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