1. SAND WHEEL By: Matt Patton Evan Robson Strawberry Berry Ryan Poster

2. The Structure Our design required a simple “water wheel” approach. By allowing a certain amount of sand to drop into the box, the wheel will spin, pulling the 1 kg weight up the 1 meter distance.

3. THE Sand Wheel Some views of THE SAND WHEEL! Dimensions:.7m x.25m x.75m Materials: PCB pipe, Wood, Duct Tape, Sand, Styrofoam

4. Calculations MASS NEED TO LEFT WEIGHT: PE=PE mh 1 = mh 2 (1kg)(1m) = m(.7m) m = 1.42kg We used 2.5kg of sand to account for Energy Lost VELOCITY AT WHICH WEIGHT WILL RISE: PE = KE mgh = ½ mv (1kg)(9.81 m/s)(1m) = ½ (1 kg)v 2 V = 4.4 m/s

5. Problems Sand flow was inaccurate Boxes were to far apart (meaning we needed more sand) Wheel didn’t spin as well as intended due to friction.