Comeback Can

This Comeback Can activity & project also includes:

Convert energy within a can. Learners build a can that suspends a weight inside the can via a rubber band. The pupils roll the can away from them as the rubber band wraps around itself. The force of the band unwinding brings the can back to the scholar.

3 Views 3 Downloads NGSS: Adaptable
Additional Tags
Instructional Ideas
  • Build a comeback can out of a clear tube to help class members see what is happening inside
  • Collect data on how far each can will roll before coming back and then change the length of the rubber band to find the effect
Classroom Considerations
  • Requires a can or container that allows for use of the bottom and the lid
Pros
  • Provides a list of materials to construct a comeback can
  • Includes an explanation of how potential and kinetic energy play a role in the activity
Cons
  • None