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Confused about significant figures in official solutions
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[QUOTE="kuruman, post: 6869580, member: 192687"] I think that 4.50 m is correct for the displacement distance. Then it would be clear how many sig figs one should use for the answers. In this case, 74 N would be strictly correct but only the most nitpicking pedant would mark 73.5 N incorrect. What if you used ##mu_k=\frac{1}{4}##? Also, the value of ##g## was not given. How do you you know how many sig figs to pick for that? My intention for saying all this is to convey the idea that if you provide one more significant figure than is appropriate in homework problems, it wouldn't matter to most people evaluating your work. It does matter, however, when you report experimental results in which case you need to pay attention to the uncertainty of your measurements and the resultant propagated error. [/QUOTE]
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Confused about significant figures in official solutions
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