elevator


 * April 29, 2011 (Friday) ||
 * May 5, 2011 (Thursday) ||
 * We had a main design on the elevator and had a basic testing using our materials to see if the elevator would work. Our design of the elevator includes two set of pulley, each set has four pulleys. The two sets of pulleys will be placed on two opposite sides of the elevator. Four pulleys will be attached to the four corners of the elevator and they will act as a movable pulley. The pulleys will be connected to the other four pulleys by string. The whole elevator and pulleys will be at last attach to two iron bar. We have also decided that the elevator box has a dimension of 80*70*70 by centimeters. During the testing, we have found a few major problems during the testing.The first problem was if the two iron bars were able to support the elevator with a certain amount of weight. Later, we had tested the iron bar by putting a person's weight on it, and we clearly observed the the iron will bend. The second major problem was how to stably attach the two iron bars onto a flat surface. We figure out that a few nails would not possibly work out. We have to find other strong nails and weights to put on the attached part of the bar to support it. ||
 * = media type="custom" key="9396220" ||||= media type="custom" key="9396224" ||
 * We had a main design on the elevator and had a basic testing using our materials to see if the elevator would work. Our design of the elevator includes two set of pulley, each set has four pulleys. The two sets of pulleys will be placed on two opposite sides of the elevator. Four pulleys will be attached to the four corners of the elevator and they will act as a movable pulley. The pulleys will be connected to the other four pulleys by string. The whole elevator and pulleys will be at last attach to two iron bar. We have also decided that the elevator box has a dimension of 80*70*70 by centimeters. During the testing, we have found a few major problems during the testing.The first problem was if the two iron bars were able to support the elevator with a certain amount of weight. Later, we had tested the iron bar by putting a person's weight on it, and we clearly observed the the iron will bend. The second major problem was how to stably attach the two iron bars onto a flat surface. We figure out that a few nails would not possibly work out. We have to find other strong nails and weights to put on the attached part of the bar to support it. ||
 * = media type="custom" key="9396220" ||||= media type="custom" key="9396224" ||