physicslab 2

physicslab 2 - Trial 1= 0.59s Trial 2= 0.46s Trial 2= 0.47s...

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Matt Idleman 9/23/09 Physics lab My prediction for our physics lab was that the two balls of different masses will drop from the same preset height and hit the ground at the same time, thus proving that acceleration due to gravity is not dependent on mass. For our group’s procedure, we first took a small wooden ball and a golf ball and found the mass of them both. Next, we took the wooden ball and dropped it from a height of 1.0 meter while timing the fall with a stopwatch. Three trials were run and all data was recorded. We then repeated this procedure for the golf ball. After obtaining all our time data, we plugged the numbers into the formula (y-y 0 ) = ½gt 2 and solved for g, which is the acceleration due to gravity. Results: Golf ball Wooden ball Mass: 46.0 g Mass: 48.0 g Trial 1= 0.44s
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Unformatted text preview: Trial 1= 0.59s Trial 2= 0.46s Trial 2= 0.47s Trial 3= 0.44s Trial 3= 0.47s Ave. = 0.45s Ave. = 0.51s 1.0m= g(0.45s) 1.0m= g(0.51s) g= 9.88 m/s 2 g= 7.69 m/s 2 Although our groups g values differed by over 2 meters/second, it is still fairly obvious that mass did not affect the acceleration when one looks at our trial times. I believe that if we would have run a few more trials to cancel out the abnormally high trial one of the wooden ball, the results would have been much closer. The main source of uncertainty for this lab was a humans inability to stop the stopwatch at the proper time. When working at times well under 1 second, reaction time becomes a major uncertainty. To help counterbalance this, we took multiple trials and found the average....
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