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• (cur) (last) 14:49, 12 October 2010 Ian (Talk | contribs) (319 bytes) (New page: <math>\begin{align} & F\le \mu R \\ & R=mg=1500\times 9\textrm{.}8 \\ & F=m\frac{{{v}^{2}}}{r}=1500\times \frac{{{15}^{2}}}{80} \\ & 1500\times \frac{{{15}^{2}}}{80}\le \mu \times 1500\...)

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