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Power, Force and Velocity

An electric m...

Question

An electric motor produces a tension of 4500N in a load lifting cable and rolls it at the rate of 2m/s. The power of the motor is

A

9 kW

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B

15 kW

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C

225 kW

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D

9 \times 10^{3} h p

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Solution

The correct option is A 9 kW
$P = F v = 4500 \times 2 = 9 k W$

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