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September 23, 2014

September 23, 2014

Posted by **anonymous** on Sunday, February 20, 2011 at 10:48pm.

How long does it take for the crane to lift the hopper to the top of the building?

- physics -
**drwls**, Sunday, February 20, 2011 at 10:55pm(Work per hopper load)/(Time) = 8200 W

Time = M g H/P

about 17 seconds

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