Courtney F and Catherine B
- Purpose of Experiment
The purpose of the pendulum lab is to figure out which variables (angle, length, or mass) will effect the average period time most. - Hypothesis
The experiment will show that the length of the string will effect the average period time most. - Set-Up
- Procedure
1. Set up apparatus using clamp, string, bob, and stand. 2. Measure the length of the string and put a loop in it. 3. Put the weight on the loop in string. 4. Measure angle of release using protractor. 5. Time 3 trails of 10 swings each using a constant mass, angle and length. 6. Adjust the angle measure and time 3 more trials. 7. Adjust the mass and do 3 more trials. 8. Adjust the length and do 2 more trials.
- Data
- Analysis
The results show that the length of the string affects the period time most. The mass and the angle did not highly affect it. Based on our data, when we moved the length to a longer length the average period was also a longer length of time. But if we moved the angle measure to a different angle, greater or less, the change was negligible. Also if we changed the mass of the bob, the times are almost identical. Based off of this data, we concluded that the length of the string holding the bob is the only factor that really affects the average period time.
- Sources of Experimental Error There was a possibility for a lot of experimental error in this lab. We probably encountered quite a lot of it as well. Each time that we would time the swings of the pendulum, Courtney would say start and Catherine would press the stopwatch to start the time; there could have been a delay. Also after the 10 swings, there was no specific or exact time that Courtney would say stop at. That is a potential reason for somewhat unclose times. Another possibility for experimental error is the fact that we had to obtain data on different days and set up the pendulum each day. We had to measure and remeasure the string to its length and it is possible that it was not exactly the same every time. .
- Summary
The main purpose of this lab was to find which variable would affect the average period most. We hypothesized that the length would affect the period most. However, we also thought that the angle would have more of an affect but it was negligible. In order to prove our hypothesis, we had to preform trials with 3 different lengths, masses, and angle measures. We were correct!
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I love your theme and color scheme! I also think that your graphs are really clear and easy to read. (And, Courtney you look pretty awesome). The only thing that I think you should fix it your procedure, cause the bullets are all over the place, as well as fix the spacing on your experimental error. Also, your data and graphs size are awkward. I think that the graphs are perfect, but the data tables could use a little bit of blowing up. Otherwise, great site!
You guys did a awesome job in making a clear analysis of data and overview of the experiment. In addition, you proved your hypothesis correct, a feat that not all of the groups achieved. You did all of this in style with a fun theme, great photo, and creative title. The only things you need to change are the layout of your procedure section and maybe the placement of the data tables with their corresponding graphs. Good job guys!
The name and the theme of your site are awesome! Your information was all easy and clear to follow except for the procedure and the data. The procedure was difficult to follow because of the spacing and position of them, and the data was a little small. I think the sources of experimental error contained too much information about possible human error and not enough on the actual experimental error. Other than those things, the data and graphs seemed accurate and the lab was fun to read! Great job! -KatieW
I love the size of the graphs which makes them extremely easy to read and clear. Also the creative title makes the website even more exciting. Maybe it is just my computer but it seems as if everything seems out of place and jumbled up. Maybe you could increase the spacing between the purpose of experiment, hypothesis, and set-up so they could have more focus. In the Experimental Error, it seems that you are lacking more details on the human error and what problems you encountered. Despite that, the placement is perfect and the data appears correct. The picture is amazing too!