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A man weighing 60 kg climbs up a stairca...

A man weighing 60 kg climbs up a staircase carrying a 20 kg load on his head. The staircase has 20 steps and each step has a height of 20 cm . If he takes 10 sec to climb his power will be _________ (g = 9.8 `"ms"^(-2))`

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Verified by Experts

`m=60+20=80kg`
`h=20xx0.2=4m`
`g=9.8ms^(-2),t=10s`
Power `P=(W)/(t)=(mgh)/(t)=(80xx9.8xx4)/(10)`
`=(3136)/(10)=313.6W`
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