question_answer

Two coolies life 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?

Answer:

                As \[W=F\times s\], therefore in lifeting the same load (F) through the same distance (s), work done by both the coolies is the same. As power = work/time, therefore, power of first coolie is more than the power of second coolie.