A man of 60kg runs up of flight of 30steps in 40sec. If each step in 20cm high calculate the power
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Answer:
Explanation:
each step = 20cm
30 steps = 30×20= 600 cm = 6 m
now, power = W/Time
for work to be done we need force × displacement
force= mg
therefore W= mgh
= 60 × 9.8 × 6
= 3528 J
power = W/T
= 3528 ÷ 15
= 235 watt. ans..
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