keparisi4823 keparisi4823
  • 13-01-2021
  • Physics
contestada

A 60.0 kg woman runs up a staircase 15 m high (vertically) in 20. s. (a) How much power does she expend

Respuesta :

PhantomWisdom PhantomWisdom
  • 16-01-2021

Given that,

Mass of a woman, m = 60 kg

She runs up a staircase 15 m high in 20 s.

To find,

Power expanded.

Solution,

Power = rate of doing work

[tex]P=\dfrac{W}{t}\\\\P=\dfrac{mgh}{t}\\\\P=\dfrac{60\times 9.8\times 15}{20}\\\\=441\ W[/tex]

So, the required power is 441 W.

Answer Link

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