PHY 121
Your 'ball down ramp' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
** Your general comment **
** Will a steeper ramp give greater or lesser time? **
I think the time required will be least for the steepest ramp.
** As slopes increases will time intervals increase, decrease or show no pattern? **
I expect the time intervals to be decreasing.
** Your report of 5 trials each way for 1 domino **
7 370.7422 1.207
9 384.5117 1.336
11 396.6406 1.379
13 410.9805 1.285
15 423 1.289
21 716.7266 2.336
23 726.1211 2.059
27 761.3828 2.512
29 777.6172 2.258
31 793.457 2.305
My data represents the time it took for the ball to travel down the ramp; the first 5 intervals were from the ball traveling left to right, the next 5 were from travel from right to left.
** Your report of 5 trials each way for 2 dominoes **
I was thinking carefully about making sure I was coordinating between releasing the domino and clicking the timer, and that the setup was the same every time.
4 1799.055 1.016
6 1811.648 1.051
8 1827.098 1.059
10 1846 1.016
12 1856.352 .992
14 1960.266 1.402
16 1976.535 1.293
18 1990.688 1.406
20 2009.734 1.285
22 2028.246 1.285
My data represents the time it took for the ball to travel down the ramp in 10 different trials. It was collected by observing ten trials, exactly as the above set of data except with 2 dominoes as a base instead of one.
** Your report of 5 trials each way for 3 dominoes **
2 2278.527 .863
4 2295.879 .832
6 2310.512 .793
9 2336.484 .871
11 2362.359 .875
13 2556.926 .918
15 2569.32 .898
17 2578.809 1.016
19 2588.703 .902
21 2601.871 1.023
** Do your results support or fail to support your hypothesis about increasing or decreasing times? **
My results DO support the hypotheses I stated previously; the time intervals decreased as the slope increased.
** How do you think ave velocity is related to slope? **
The average velocity of the system will increase as the slope's angle increases. If the time decreases, this means the velocity is increasing, so the average velocity will also reflect that.
** Speculate on why ave velocity changes with slope. **
I would say that the increase in angle allows the ball to start with more force on it just from gravity; the weight of the ball matters more the higher off of the table it is.
** How could you test your speculations? **
You could repeat the experiment with different sized balls and measure a wider rang of angles. This can also be exhibited by the fact that, if the track is placed at a negative angle to the table (so that the highest point is table-level and the ramp points towards the ground), the ball cannot travel upward because of gravitational pull.
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1 hour
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&#Very good responses. Let me know if you have questions. &#