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A girl of mass 40 kg climbs 50 stairs of average height 20 cm each in 50 s. Find the power of the girl. (g = 10 m s–2)

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A girl of mass 40 kg climbs 50 stairs of average height 20 cm each in 50 s. Find the power of the girl. (g = 10 m s<sup>–2</sup>)






 
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