Question

A man whose mass is 50 kg climbs up 30 steps of a stair in 30 s. If each step is 20 cm high, calculate the power used in climbing the stairs. [take g = 10 ms-2]

Answer 1

concept of power concept of power

Answer 2

Answer:

100 w

Explanation:

Given,

→ Mass of man=50 Kg

→ g=10m/s2

1st thing to do,

= 20cm Þ 30 steps = 600 cm = 6m Þ h=6m

w= mgh Þ  

w= 50 x 10 x 6

♣ t=30sec Þ  

p = w/t Þ  

p=50x10x6/30  

Þ =100 W