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A man of mass 80 kg runs up a flight of stairs 20 m high in 10 s. (a) how much power is used to lift the man? (b) If the man’s body is 25% efficient, how much power does he expend?

User Zaratustra
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1 Answer

6 votes

Answer:


p = 800 {m}^(3) {s}^( - 1)

Step-by-step explanation:

(b)


e = (u)/(p)


p = eu

(0.25)(800)

P= 200 m^(3)/s

User SpazDude
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