11-11

When I sat down in class there was nothing on the white board except the daily question. I was excited because I did not know what we were going to be doing in the class. Then Mr. Manning put up the schedule up and then I know it was going to be another normal physics day, but still fun. We then moved to the first thing on the agenda, which was the Daily question. The daily question was: Does dieting person lose mass or weight? Many people were confused saying that mass changes because you lose kg when your on a diet and your weight which is your force does not change. The answer was both in a way because when you lose mass you can also lose weight, but that is not necessarily true. So you lose mostly mass when you go on a diet. Then the question came up how you can lose just weight and not mass? You can lose weight and not mass by going to another planet or to higher elevation.
 * The Moon ||  ||
 * Mass (kg) || Weight (N) ||
 * 0.011 || 0.0179 ||
 * 0.098 || 0.157 ||
 * 0.156 || 0.248 ||
 * 0.251 || 0.403 ||
 * 0.349 || 0.556 ||
 * 0.499 || 0.799 ||
 * 0.748 || 1.197 ||
 * Mars ||  ||
 * Mass (kg) || Weight (N) ||
 * 0.011 || 0.042 ||
 * 0.098 || 0.377 ||
 * 0.156 || 0.588 ||
 * 0.251 || 0.938 ||
 * 0.349 || 1.309 ||
 * 0.499 || 1.865 ||
 * 0.748 || 2.809 ||

Next thing on the agenda was to go over our lab that we completed the day before. We just went over a few of the key points in the lab. Mr. Manning asked us why the weight accelerated? After the room silenced some brave student raised their hand and said that it was gravitational acceleration and that we measure it with a spring scale, but it reads the upward force not the downward force. Then we went over what the general word equation should have been which was: Weight(N)= 9.310 m/s^2x Mass(kg)+0.4364N Then we went over the question that asked why your mass does not change planet to planet and that is because your protons, neutrons, and electrons do not change at all. After talking about the different planets and our weight and mass on them we came up with another question about what would be used to measure our mass. Each the spring scale and digital balance use gravity to measure mass. A triple beam balance is used to find mass on different planets because they have the same force on each side of the balance.

We then ended class by doing our homework for tomorrows class along with a Mass vs. Weight notes page.