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Phy 201
Your 'cq_1_01.2' 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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The problem:
Answer the following:
• How accurately do you think you can measure the time between two events using the TIMER program?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
I would say somewhat accurately using the timer program; however, given human error with effectively and precisely clicking the mouse, it makes it challenging to do so. Not to mention, for example, the added challenge of accurately determining when the oscillation actually makes its full cycle by reaching original position.
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• What is the shortest time interval you think you would be able to measure with reasonable accuracy?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
The shortest time interval, in which I could be able to measure with reasonable accuracy, would have to be one full second. Anything less than that is just extremely challenging. I started doing interval measurements from 15 seconds, down to half a second, and once I got beyond the one second interval, it was near impossible for me to conduct this.
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• How does the percent error in timing intervals change as the time between the events gets smaller?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
The percent error increases as the time between the events gets smaller. I mean, my reasoning for this is that the shorter the intervals, the greater error would occur with reflex timing and what not.
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• How accurately are you able to measure the positions of the ball and the pendulum in the initial video?
answer/question/discussion: ->->->->->->->->->->->-> (start in the next line):
The video I observed was the cart moving down the incline along with the pendulum. It was not very accurate for me. Yes, it clearly reached the endpoint before the pendulum reached two full cycles. However, my observation is not based on real time, with correct angles of observation. Although I would believe my measurement of the pendulum in the video was more accurate then the object moving down the cart. As I could not tell also the real angle where the object reached the endpoint, I had to rely on sound, and this would create a great deal of inaccuracy.
Professor Smith, is there a video on the included lab dvds that instead of the cart, there is a ball moving down an incline?
I have a number of such videos, but not necessarily on the DVDs.
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Copy and paste your work into the box below and submit as indicated:
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40 minutes on this assignment.
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9/3 3pm
&#This looks very good. Let me know if you have any 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. &#