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340 * 9.8 * ln((3600+1600+250)/(180+1600+250)) + 363 * 9.8 * ln((1600+250)/(80+250))
340 * 9.8 * ln((3600+1600+250)/(180+1600+250)) + 363 * 9.8 * ln((1600+250)/(80+250))
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