Asked by wellington
                . A 475 kg pre-stressed concrete beam is to be raised 10.0 m in 24.0 s. How many kilowatts of power
is needed for the job?
            
            
        is needed for the job?
Answers
                    Answered by
            Damon
            
    power = work/time
work = weight * distance up
= 475*9.81*10
so
power = 475*9.81*10 / 24 Joules/second or Watts
divide by 1000 for kilowatts
    
work = weight * distance up
= 475*9.81*10
so
power = 475*9.81*10 / 24 Joules/second or Watts
divide by 1000 for kilowatts
                    Answered by
            wellington
            
    1.9415625
    
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