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OpenStudy (anonymous):
How long does is take a 25% efficient 3400W crane to lift a 720kg block 44m?
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OpenStudy (anonymous):
Work done W = mgh = 720*10*44 = 316800 Time t = W/P = 316800/(3400*25%) ~ 373 s :D
OpenStudy (anonymous):
thanks looks so simple know that i see it laid out there. i was so close on my own i was over thinking the problem. thanks alot
OpenStudy (anonymous):
wish i could help you with your problem
OpenStudy (anonymous):
You're welcome :D
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