My machine was a heaving whipping cream carton with yellow mahatma rice which was held up by string attached to a metal pulley which rode on a string track. What was interesting about the machine was that the more weight I added to the machine, the faster it went. I can explain this because adding more weight adds more potential energy which translates to a higher kinetic and thermal energy since it is being powered by gravity. The more rice and weight I add to the machine, the more efficient it becomes.

A main aspect of all of our machines, is gravity. Gravity exists because large bodies of mass attract each other. The Earth's gravity pulls my machine down, but due to the pulley being connected to a rope, the machine slides down along the track. This provides a free and never ending power source. The more cargo you transport increases speed so large objects can be moved with ease with this method of transportation. The one downside is the machine can only transport downward. To travel up, the machine would need a motor or another form of power.

The link shown here: https://docs.google.com/spreadsheets/d/1Q9VWWSOraUaC1S0N0GAhN_iqNScrNigScmWs3ZI2fl0/edit?usp=sharing shows our calculations and graphs pertaining to the machines. What is shown is velocity, velocity over time, potential and kinetic energy, and graphs of all of our findings.