Hey all..here is another stumper (for me).(adsbygoogle = window.adsbygoogle || []).push({});

"A 1000 kg elevator has a maximum load of 800 kg. If constant friction retards the elevator at 4000 N, to lift at 2 m/s, what does the motor's hp(horsepower) have to be?"

Now, I was trying to do a lot of things with this one. I thought it was an obstacle that we had a speed and not a distance. I tried getting around this by simply acknowledging that since we went to go 2 m/s, and since a watt is 1 J/s, that I could jsut sort of throw the /s off each of them and leave it at 2 m. Prolly totally off.

Any Help?

(My answer was 5.92 hp)

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# Homework Help: Elevator Problem

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