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A 220-Kg Object Is Lifted at a Constant Speed Through

Question 53

Multiple Choice

A 220-kg object is lifted at a constant speed through a height of 42 m by a crane. If the crane takes a total time of 1.8 seconds to lift this object, what is the average power required? Use g = 10 m/s2.


A) 25 kW
B) 51 kW
C) 75 kW
D) 100 kW
E) 150 kW

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