Phy 121
Your 'rubber band calibration' 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 initial comment (if any): **
I did not receive any thick rubber bands in my lab kit. I do have approximately 10 thin ones. A previous experiment called for a thick rubber band so I used one I had here but I didn't realize I was supposed to have several marked ones.
** first line ruler markings, distance in actual cm between ends, how obtained: **
** The basis for your uncertainty estimate: **
** Positions of the ends of each rubber band, actual lengths of each when the chain supports 1 domino: **
** Distances between ends when supporting 2 dominoes **
** Lengths when supporting 4, 6, ... dominoes: **
** Your table of force in Newtons vs. length in cm for all rubber bands **
** Describe the graph of your first rubber band **
** The tension force in your first rubber band at length 9.8 cm: **
** The length of your first rubber band when tension is 1.4 N: **
** The forces at your observed lengths the 1st rubber band, as given by the curve, and the deviations of those curve-predicted lengths from the observed lengths: **
** The lengths predicted for forces .19 N, .38 N, .76 N, 1.14 N, etc. by the curve for your first rubber band; the deviations of your actual observations from these predictions: **
** The typical error you estimate when predicting force for a given length from your graphs: **
** The typical error you estimate when predicting length for a given force from your graphs: **
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** **
You can do this experiment with six of the thin rubber bands. Since you don't have the pack of thicker rubber bands, you can use the thinner ones in subsequent experiments that require calibrated rubber bands.