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?
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
Answered by wellington
1.9415625