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Train_Lab
2013-11-13 来源: 类别: 更多范文
Train Lab
Train Lab
Problem- What's the acceleration of the L train'
Materials- Measure meter, stop watches, L train
Procedure- First, the person in charge examines the platform briefly. Then he
takes 11 people and places that at approximate. equal distances from each other over the
entire platform. These are not going to be exactly accurate, as they are just a quickly
formed hypothesis of the equal distance people people. Once the people are in
their positions, they are handed a stopwatch by the safety people and are to remain in
these spots until told to do otherwise. The person closest to the beginning of the
platform (the first place the train passes coming into the station) is given the measure
meter. Next, as the train enters the station, all stoppers get ready. As soon as the train
starts to move out of the station, all stoppers start their watches and stop their watches
when the back of the train passes them. Then, the person with the measure meter
measures the distance between each person to get the displacement. With the time and
displacement, one can get velocity. Then, we calculate the changes in velocity to
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