1. The Team

2. Overview of Device 5lb weight starts to roll/pulls 1kg mass
Weight stops at gate, hits wheel
Wheel releases nail clipper
Clipper pops balloon
The gate swings open
5lb rolls to bottom/pulls 1kg up 1 meter

3. Stored Energy Compressed nail clipper =18.9 joules
Counterweight .45kg at height of 1 meter
5lb weight- starts up .5 meters
.2kg bottle of sand at height 14 inches
Skateboard wheel .25kg drops a meter
Compressed nail clipper
=18.9 joules
PE0+KE0+PEspring+Win=PEf+KEf+PEspring+Eloss

4. Design/Construction Issues
Tried to use fishing reel
Tangled strings
Gate may slip
Balloon not popping properly
Mass is lifted too quickly
Budget was not a problem

5. Conclusion Our device consistently lifts the 1 kg mass
A little too fast
Lots of time and effort
Overall: Success