Physics 212 Lab Assignment 6 Fall 2008
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Due at the beginning of lab, November 5 or 6.
Reading:
Taylor: Chapters 8.
Problems:
6.2
7.4
Weighted average: In the speed of light experiment in 212 lab, the error
associated with the measurement becomes smaller as the distance to the second
mirror becomes longer. A student records the following data (with errors) for the
speed of light.
distance of mirror (m) speed in 108 m/s
10 3.2 ± 0.4
20 3.1 ± 0.3
40 2.9 ± 0.1
60 2.96 ± 0.08
80 3.08 ± 0.06
From her five measurements of the speed of light, what should she record for the
weighted average value of c and its error?