By: Matthew Iannacone
Brandon Waller
Christopher Jones
Sammy Akato
The Design
 Design consists of a
spring launcher to
launch a marble into
a cup, which rotates
and drops the marble
onto a series of
declining PVC tracks.
 There is a cup
attached to a stamp
on a hinged arm at
the end of the last
PVC track, which the
marble knocks over
,stamping the paper.
Energy Used
 Spring
-Elastic Potential Energy transferred to ball’s Kinetic
Energy
 Ball
-Gravitational Potential Energy decreases as Kinetic
Energy increases
 First Cup
-Conservation of momentum
 Ball, Stamp, and Cup
-Conservation of momentum
Construction Issues
 The biggest problem was getting the ball to
shoot into the cup and turn it
 The other most significant problem was
making sure the hinged arm functioned
properly
Conclusions
 Our design successfully and consistently stamped the
paper
 Practice makes perfect when dealing with projectile
motion and targets
 Hinges can become stiff if screwed in too tightly
 Mouse traps with stamps attached are very effective
(This is what everyone else did)