Dear friends,
Do patiently wait for the two images to load. TheyÂ’ll take about 2 minutes at most. IÂ’ve created some cool diagrams so that itÂ’ll be easier for you guys to understand whatÂ’s going on. And also,pat greater attention to the stuff in
BOLD and
italic..
Cheerioz,
stcp
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Name of School: Temasek Junior College
Subject of spa: Physics
Month of attempt: May
Skill: Skill B only
Number of attempts: 1/3
Topic on: Oscillations of a circular disk
Set up: You are provided with 2 Disks (Disk A and B), 3 pieces of strings (forgot the length)Â… 3 clips, 6 assorted massesÂ… The set up is as shown in Figure oneÂ…
Table: (Refer to Figure 2)
Oh yahÂ…. You only need to take
6 readings; I guess you guys know that right?
Then you need to account for your pointsÂ… Draw a best-fit straight line. You can account for your data in
two ways.
If all your points form a straight line, you sayÂ….
The date points are reliable as there is little scatter about the best fit line.OR
If there are some points out of place, you sayÂ…
From the graph plotted, the _____ (1st, 2nd 3rd or 4th) data point appears anomalous as it deviates significantly from the trend. This data is retaken and recorded as the 7th data point, which is in line with the trend. The possible cause of the anomaly is _________________ (eg. The presence of wind.)
The data points are reliable as there is little scatter of points about the best fit line.Shape of Graph: Straight line
Other values/measurements we must find: none
Precautions for marking scheme:
Please remember to put your battery on the retort stand!!!
Do set small angles of oscillations and time only when the oscillations are steadyÂ… And one more thing,
donÂ’t put your masses on Disk AÂ…. Put them on Disk B! (It has happened to a student) AND..
donÂ’t swing your disk like a pendulum.. All the masses will fall and fly k (Yes, it has happened)Â…. Turn it anti-clockwise or clockwise and let it oscillate.. Get what I mean? (If you still donÂ’t understand, refer to figure 1)
Wha if all SPA assesments standard one, then we better start posting more!
