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OpenStudy (anonymous):
What is the power of a crane that lifts 500kg 3 metres in 2 seconds?
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OpenStudy (anonymous):
power of crane=workdone by crane/required time =change in potential energy of the block/required time =mgh-0/2 =500*9.8*3/2=14700/2=7350watt=9.8525 Hp
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