Question

A boy does 400j of work is 20sec & 100j of work in 2sec find the ratio of power dlivered by body in two cases?

Answer 1

1st body

Power=Work /time

=400/20

=20 watt

2nd body

Power=Work /time

=100/2

=50 watt

So,the ratio is....

Power of 1st body:Power of 2nd body

20:50

=2:5