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August 2, 2014

August 2, 2014

Posted by **Jack Hill** on Wednesday, July 18, 2012 at 9:38pm.

floor to another. To lift 250 1-kg containers a vertical distance of 2.4 m, the motor runs for 45 s.

What is the efficiency of the motorized conveyor system?

- Science -
**drwls**, Wednesday, July 18, 2012 at 9:59pmWork output = 250*g*2.4 = 5880 joules

(g=9.8)

Work input = 450*45 = 20,250 joules

For the efficiency, take the output/input ratio

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