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PHY201
Your 'cq_1_00.1' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
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In the following you don't have to actually do calculations with your actual data. Simply explain how you would use data of this nature if you had a series of several position vs. clock time observations:
• If you did use observations of positions and clock times from this video, how accurately do you think you could determine the positions, and how accurately do you think you would know the clock times? Give a reasonable numerical answer to this question (e.g., positions within 1 meter, within 2 centimeters, within 3 inches, etc; clock times within 3 seconds, or within .002 seconds, or within .4 seconds, etc.). You should include an explanations of the basis for your estimate: Why did you make the estimate you did?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
I believe that I can correctly determine the roll of tape’s position to about 1.5inches. The reasoning for this is due to my estimate of its size and my ability to average out its position based on the blurriness. Also the camera was moved during the experiment creating another type of illusion to the true position of the object. As far as the time estimate, I see that even by looking frame by frame the time estimate would only be accurate to maybe .1 seconds. It is the only number that I can clearly see changing.
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• How can you use observations of position and clock time to determine whether the tape rolling along an incline is speeding up or slowing down?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
With only three points of data it would be hard. But if we could get the beginning position time, the middle position time and the end position time, we could find the difference between strt-middle, and middle-end. Then compare the 2
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• How can you use observations of position and clock time to determine whether the swinging pendulum is speeding up or slowing down?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
I would have to do take the time of the positions: start, ¼ of the way, ½ of the way, ¾ and the end. The reason for this is that the pendulum is on a string, and it will speed up till the center and then slow down.
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• Challenge (University Physics students should attempt answer Challenge questions; Principles of Physics and General College Physics may do so but it is optional for these students): It is obvious that a pendulum swinging back and forth speeds up at times, and slows down at times. How could you determine, by measuring positions and clock times, at what location a swinging pendulum starts slowing down?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
This is because gravity will drive the pendulum to speed up from the highest point(side) to the lowest point (center) and will slow it down as it goes “uphill” from center to side.
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• Challenge (University Physics students should attempt answer Challenge questions; Principles of Physics and General College Physics may do so but it is optional for these students): How could you use your observations to determine whether the rate at which the tape is speeding up is constant, increasing or decreasing?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
You could record the time it takes to get from the right to the center. Then take the time from the center to the end. Then you could compare them to see if one is shorter than the other.
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30min
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&#Very good responses. Let me know if you have questions. &#
&#There is additional discussion at the link below. Nothing in your work requires correction. You might want to take a quick look at the link just to see what is available there, but this isn't required. &#
&#See any notes I might have inserted into your document. If there are no notes, this does not mean that your solution is completely correct.
Then please compare your solutions with the expanded discussion at the link
Solution
Self-critique your solutions, if this is necessary, according to the usual criteria. Insert any revisions, questions, etc. into a copy of this posted document. Mark any insertions with &&&& so they can be easily identified.If your solution is completely consistent with the given solution, you need do nothing further with this problem. &#