An electric motor produces a tension of $4.5 k N$ in a load lifting cable and rolls it at the radia $2 m / s$ . The power of the motion is

9 k W

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15 k W

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225 k W

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9 \times 10^{3}

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Solution

The correct option is C $9 k W$
Given
$F = 4.5 k N$
$v = 2 m / s$
The power of the motion is,
$P = F . v$
$P = 4.5 \times 2 k k W$
$P = 9 k W$
The correct option is A.

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Similar questions

An electric motor creates a tension of 4500 N in a hoisting cable and reels it in at the rate of 2 m/s. What is the power of the electric motor?

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3 m s^{- 1}

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