Physics

Problem

A 60 HP electric motor lifts an elevator having 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: (1 HP = 746 W,

g = 10 \text{ m/s}^2

) a.

1.7 \text{ ms}^{-1}

1.9 \text{ ms}^{-1}

1.5 \text{ ms}^{-1}

2.0 \text{ ms}^{-1}

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