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.