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26 June, 17:03

A girl lifts a 100 N load to a height of 2.0 m in 0.5 sec. What power does the girl produce?

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  1. 26 June, 21:02
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    Answer: The power produced by the girl is 400 watts.

    Explanation-

    According to the question, load (w) = 100N

    Height, h = 2.0m

    Time taken, t = 0.5 sec

    Mathematically, Power = Work done / Time taken

    Work (W) = Force * Distance

    = Load * Height

    = 100 * 2.0 = 200 Joules

    Putting the value of work and time in the formula of power, we get-

    Power = 200Joule / 0.5 sec

    = 400 watts
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