Team Introduction Ben Hoptroff, Philip Alier, George Threadgill, Evan Richards The Machine • Remove stopper • Weight slides down tube • Pulls the string • Gear conversion • Lifts weight Stored Energy in Device • • • • Mgh Mass of the counterweight G is the constant of gravity H is the height of the highest point of the tube. Design/Construction issues • • • • • • Concept Changing from old designs The screw hit the wood whilst turning Overcoming static bond of counterweight Releasing the counterweight Finding a counterweight Conclusion • We used gravity and gear conversions to help us lift a one kilogram weight one meter off the ground within ten seconds.