Two collies lift some load from the road to the roof of a bus. One of them takes 1 min. and the other takes two min. to do the same job. Who has done more work and whose power is more ?

Explanation

As `W=Fxxs`, therefore in lifting the same load (F) through the same distance (s), work done by both the coolie is the same. As power `=` work`//` time, therefore, power of first coolie is more than the power of second coolie.