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27 January, 12:52

a body whose mass is 40kg runs up a flight of 30steps, each 150mm high in 6 seconds. Find the average power developed

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  1. 27 January, 16:37
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    Answer:g=a=10m/s^2,

    M=40kg,

    S=150mm/1000=0.15m*30steps each=4.5m,

    F=ma=40*10=400N

    Power=W/t=F*s/t=F*V=1800/6 = 300W or 0.3kW
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