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Mathematics 12 Online
OpenStudy (anonymous):

A 2400 kg elevator is attached to a 1400 kg counterweight. What power must the motor supply to raise the elevator at 0.2 m/s? @Physics

OpenStudy (apoorvk):

|dw:1332617346357:dw| total weight=3800kg. now there is a force due to gravity in the system. what force is it, so that it cancels out the gravity plus do a work at the reqd rate.. make equations and try...

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