Question

an old man and a young boy of mass 50kg clim up at the same height while old man clim up in 25 seconds and boy clim up in 15 second calculate the ratio of work done​

Answer 1

answer : 5:3

p. e = mgh

h = x = same for both

so

p. e (of boy) = 500gx

p. e (of old man) = 500gx

power = work done /timetaken

power (for boy) = 500/15

power (for man) = 500/25

taking ratios we get 10: 6

ans : 5:3