Phy 121
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: Within .01 sec
*What is the shortest time interval you think you would be able to measure
with reasonable accuracy?
answer/question/discussion: .125 was the shortest time acheived
*How does the percent error in timing intervals change as the time between
the events gets smaller?
answer/question/discussion: Accuracy would become more and more dificult
due to response time from human error.
*How accurately are you able to measure the positions of the ball and the
pendulum in the initial video?
answer/question/discussion: To appx 31.963in/sec
By subtracting the distance of the first intreval from the last taken
dt = 20.781 - 20.343 = .438
vAve = 18in - 4 in = 14in
ds = ( vAve / dt )
You can get a 5-significant-figure velocity from a set of position measurements that are good to only 1 or 2 significant figures.
Otherwise your result is good, and your thinking is correct.
Note however that you are using vAve for displacement and `ds for average velocity. Be sure you see my note on your preceding submission.
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30min
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&#Your work looks good. See my notes. Let me know if you have any questions. &#