Don’t Let Granny Don’t Let Granny Break A Nail!Break A Nail!

A Rube Goldberg device that opens A Rube Goldberg device that opens a tea box.a tea box.

Team MembersTeam Members

Garrett EvansGarrett Evans Carlisha SimpsonCarlisha Simpson Michael DeiderichMichael Deiderich Brittany CaldwellBrittany Caldwell

The MachineThe Machine

This machine This machine is designed to is designed to open a tea jar open a tea jar with a paint with a paint can lid. can lid.

First StepFirst Step

A compressed spring is A compressed spring is released, changing energy released, changing energy from potential energy of a from potential energy of a spring into kinetic energy of a spring into kinetic energy of a ball.ball.

Second StepSecond Step

As the ball rolls As the ball rolls up a ramp, its up a ramp, its kinetic energy is kinetic energy is changed into changed into gravitational gravitational potential energypotential energy

Third StepThird Step

When the ball’s velocity changes When the ball’s velocity changes from positive to negative, the from positive to negative, the potential energy is converted potential energy is converted into kinetic energyinto kinetic energy

Fourth StepFourth Step

The ball rolls The ball rolls into a cup which into a cup which drops. The drops. The force of the ball force of the ball and cup then and cup then pushes a string.pushes a string.

Fifth StepFifth Step

The string moving pulls a The string moving pulls a support from underneath an support from underneath an arm, which makes the arm drop. arm, which makes the arm drop. This step converts potential This step converts potential energy into kinetic energy.energy into kinetic energy.

Sixth StepSixth Step

The falling arm The falling arm hits the screw hits the screw driver which driver which acts as a lever acts as a lever opening the tea opening the tea cancan

Eureka!Eureka!

The tea jar is open!The tea jar is open!

ConclusionConclusion

The jar top is popped open from The jar top is popped open from energy changing in six steps. energy changing in six steps.

Any Questions?Any Questions? Thank youThank you