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A 60 HP electric motor lifts an elevator with a maximum total load capacity of 2000 kg. If the frictional force on the elevator is 4000 N, the speed of the elevator at full load is close to (Given 1 HP = 746 W, g = 10 m/s2)
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a. 1.5 m/s
b. 1.7 m/s
c. 2.0 m/s
d. 1.9 m/s
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