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phy 201
Your 'question form' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
** Question Form_labelMessages **
Conseravtion on a incline
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You may if you wish do the remainder of this experiment using your data from the experiment 'Uniformity of Acceleration for a Ball on a Ramp' (that experiment is in turn a continuation of the experiment Ball and Ramp Projectile Behavior, which preceded it). In those experiments you set up '2-, 3- and 4-domino ramps' and carefully observed the range of the ball as it rolls down and off the ramp. Based on the ranges and the vertical drop, you used the data analysis program to determine the speed of the ball at the end of the ramp.
If you have only the 15-cm ramp then you would have used half the specified number of dominoes (i.e., 1 domino instead of the specified 2, and 2 dominoes instead of the specified 4), and your 10, 20 and 30 cm rolls were probably 5, 10 and 15 cm).
The data program requests the number of dominoes, from which it calculates a slope based on a 30-cm ramp. A 15-cm ramp has only half the 'run' of a 30-cm ramp, so if you used a 15-cm ramp you would enter double the number of dominoes you actually used. That is, if you use 1 domino on a 15-cm ramp, tell the program you used 2; if you used 2 dominoes tell the program you used 4. If you happened to use 3 or 4 dominoes, you would tell the program you used 6 or 8, respectively.
If not, you should review the instructions for those experiments, set up ramps with 2 and 4 dominoes (1 and 2 dominoes if using a 15-cm ramp). Using 5 trials you should obtain horizontal ranges for the ball rolling distances of 15 cm and 30 cm along each ramp (use 7.5 and 15 cm if you have only the 15-cm ramp), and calculate the mean and standard deviation of ranges for each set of 5 trials. You will have a total of 4 five-trial means and standard deviations to report.
If you use the data from the experiments you will have information for 10, 20 and 30 cm rolls on 2- and 4-domino ramps, for a total of 6 five-trial means and standard deviations, which you will have reported once already (you should report once more).
In the space below report in the first line the number of dominoes, the distance of the roll down the ramp, and the mean and standard deviation of the horizontal range for your first setup. In the second line report the same information for your second setup, etc., until you have reported your results for all of your setups (4 setups if you obtained new data for the experiment, 6 setups if you used your old data). In the first subsequent line, give the distance the ball fell after leaving the end of the ramp.
-------->>>> 10, 20, 30 cm rolls 2 and 4 dom; report # dom, dist, mean and std dev of horiz range first ramp; same reversed ramp; then 2d, then if present 3d; also vert dist of fall
Your answer (start in the next line):
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Im not sure what its asking is it asking to do an experiment or so yeah I just want to know how am I supposed to do it
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self-critique #$&*
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It is assumed at this point that you have done the experiments for Assignment 13.
The first of those experiments is the one referred to here. See that experiment. You can run that experiment and this one at the same time, since both use the same setup and can share much of the data.
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#$&*
phy 201
Your 'question form' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
** Question Form_labelMessages **
Gravitation field
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Note that the default impulse of 8000, which gives the satellite an initial velocity of 8000 m/s, gives an orbit which is not quite circular. Change the 8000 to 9000 and click the Run Simulation button to see how the orbit changes as a result of the greater initial velocity. Then change the impulse to 7000 and click the Run Simulation button to see what happens. Then see if you can find the initial velocity that gives you a good circular orbit. (A 'good' circular orbit would be one in which the velocity doesn't change by more that about 100 m/s from one point of the orbit to another. If you can do better than that with a few minutes' extra effort, fine; if you can revise a good strategy for efficiently refining your attempts you can get very good precision).
Report in the first line the velocity that gives you a good circular orbit. In the second line report the shapes of the orbits for impulses of 9000 (kg m/s) / kg and for 7000 (kg m/s) / kg. Starting in the third line describe your strategy for obtaining a good circular orbit:
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Not sure at all how to get a circular orbit with only a variation of around 100 m/s Ive tried but I am nowhere close at all
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I would keep adjusting the initial velocity up or down until achieving the desired orbit.
You don't mention what velocities you have tried or what the approximate variation is in the speeds within each orbit.
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