Hey Everybody,
I have only posted here a few times before, so if you need some context, please look at my past posts. Basically, I don't have access to a lab right now (long story there) and I have a thesis which depends on empirical results. Normally I would have thrown in the towel, but graduating is really important to me and so I thought I would try my hand at obtaining my results through gedanken experiments. To start simple I tried to measure the value of g. I imagined dropping a lead ball from a height of 1 meter to the ground (in a vacuum of course) and timing the fall using the formula \begin{equation}g=\frac{2h}{t^{2}}\end{equation}. So far so good, but I am not obtaining results consistent with other experiments. I ran 3 trials and obtained times of .567 seconds .217 seconds and 1.21 seconds (all results to within .001s). Neglecting the lack of precision, my results are hardly accurate :( and I'm at a loss as to what could be happening. RIght now I am using a stopwatch timer (which I admit is not very accurate), but I don't see where the error comes from! Please help, I can answer any questions about my experiments!
I have only posted here a few times before, so if you need some context, please look at my past posts. Basically, I don't have access to a lab right now (long story there) and I have a thesis which depends on empirical results. Normally I would have thrown in the towel, but graduating is really important to me and so I thought I would try my hand at obtaining my results through gedanken experiments. To start simple I tried to measure the value of g. I imagined dropping a lead ball from a height of 1 meter to the ground (in a vacuum of course) and timing the fall using the formula \begin{equation}g=\frac{2h}{t^{2}}\end{equation}. So far so good, but I am not obtaining results consistent with other experiments. I ran 3 trials and obtained times of .567 seconds .217 seconds and 1.21 seconds (all results to within .001s). Neglecting the lack of precision, my results are hardly accurate :( and I'm at a loss as to what could be happening. RIght now I am using a stopwatch timer (which I admit is not very accurate), but I don't see where the error comes from! Please help, I can answer any questions about my experiments!
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