Bryan+Cramer+9-29

TPJ Bryan Cramer 9-29-08 Period 4 Today’s Objectives: Static Equilibrium Lab Today when we walked into class we picked up The Static Equilibrium Post Lab sheet, which were pages 19-21. Right away we gathered all of our materials for the lab and got to work. The goal of the lab was to learn how weight of an object can change when using multiple force scales. To answer this question we hung a ruler from the force scales in different arrangements. We would either hang a force scale on top of another one or we would put them on opposite sides, as you can see in the picture. When we did this the force scales would all read different amounts of Newtons. This is because the scales were balancing out the weight. The next section of our lab was to figure out how the two force scales would change if the weight was shifted to the left or the right of the ruler. We did this by setting up a force scale on either side of the ruler and taking measurements when the weight was at the middle, left, and right side of the ruler. When in the middle the scales read even, but when the weight was shifted to a side the side it was on held all of the weight. The last part of the lab was to figure out how the weight would change if a painter would walk across his scaffolding. The ruler represented the scaffolding and the weight represented the painter. We cho se one of the force scales to take measurements on and then moved weight from right to left and took the measurements. When we finished that we put the points into a graph to see how they relate.