Question

It takes 20 second fir a person A with a mass of 50 kg to climb up the stairs

Answer 1

Answer:

it takes 20s for a person a of mass 50s to climb up the stairs while another person b of same mass does the same in 15s Compare the power developed by the person a and b

Answer 2

Answer:

Answer

Step-by-step explanation:

A takes 20 s to climb the stairs while B takes 15 s, do do the same. Hence B does work much fasterrate than A ; more power is spent by B .

$power \: developed \: \alpha \frac{1}{time \: } \\ (and \: amount \: of \: work \: done \: is \: same)$

$\frac{power \: developed \: by \: a}{power \: devloped \: by \: b} = \frac{15}{20}$

= 3 : 4