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October 23, 2014

Homework Help: physics

Posted by Anonymous on Wednesday, February 24, 2010 at 10:19pm.

an elevator lifts a total mass of 1.1x10^3 kg, a distance of 40 m in 12.5 s. How much power does the elevator demonstrate?
P=w/t
w=mgd (1.1x10^3)(9.8)(40)=4.3x105J
4.3x10^5J/12.5=3.4x10^4
is this right or should 12.5 s be converted?

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