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Physics

The power of a motor is 40 kW. At what speed can the motor raise a load of 20,000 N?

Work, Energy & Power

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Answer

Given,

Power = 40 kW

Force = 20,000 N

Power = force × velocity

Hence,

velocity=powerforce⇒velocity=40,00020,000⇒velocity=2 ms−1\text{velocity} = \dfrac{\text{power}}{\text{force}} \\[0.5em] \Rightarrow \text{velocity} = \dfrac {40,000}{20,000} \\[0.5em] \Rightarrow \text{velocity} = 2 \space ms^{-1} \\[0.5em]

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