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April 24, 2014

Homework Help: physics

Posted by monic on Friday, October 12, 2012 at 12:09am.

A 650-kg elevator starts from rest and moves upward for 2.80 s with constant acceleration until it reaches its cruising speed, 1.64 m/s.
(a) What is the average power of the elevator motor during this period?
W

(b) How does this amount of power compare with its power during an upright trip with constant speed?
W

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