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August 2, 2014

Homework Help: Science

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

container factory uses a 450 W motor to operate a conveyor belt that lifts containers from one
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?

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