Download Don`t Let Granny Break A Nail!

Don’t Let Granny
Break A Nail!
A Rube Goldberg device that opens
a tea box.
Team Members




Garrett Evans
Carlisha Simpson
Michael Deiderich
Brittany Caldwell
The Machine
 This machine
is designed to
open a tea jar
with a paint
can lid.
First Step
 A compressed spring is
released, changing energy
from potential energy of a
spring into kinetic energy of a
ball.
Second Step
 As the ball rolls
up a ramp, its
kinetic energy is
changed into
gravitational
potential energy
Third Step
 When the ball’s velocity changes
from positive to negative, the
potential energy is converted
into kinetic energy
Fourth Step
 The ball rolls
into a cup which
drops. The
force of the ball
and cup then
pushes a string.
Fifth Step
 The string moving pulls a
support from underneath an
arm, which makes the arm drop.
This step converts potential
energy into kinetic energy.
Sixth Step
 The falling arm
hits the screw
driver which
acts as a lever
opening the tea
can
Eureka!
 The tea jar is open!
Conclusion
 The jar top is popped open from
energy changing in six steps.
 Any Questions?
 Thank you