A 68 kg student runs up a flight of steps. Each step is 20 cm high. What is her power output if she can do 14 steps in 4.8 seconds?

Question

A 68 kg student runs up a flight of steps. Each step is 20 cm high. What is her power output if she can do 14 steps in 4.8 seconds?

Answer 1

Power= Work/Time

Work = mg*DX (mg: Weight, DX=net displacement)

----> Power =mg*DT/time= 68*9.81*(0.2*14)/4.8=389.13 [W]