Question

A man climbs up a staircase in 30 s whereas his brother takes 40 s for the same task. Compare the
work done by both of them and the power spent by them while doing the task.​

Answer 1

Answer: the man has done more work than his brother.

Explanation: Both of them travelled the same distance of the staircase.

But the man takes 10 seconds less than his brother.

Since power is inversely proportional to time so man has involved more power than his brother.

Answer 2

Answer:

Explanation:

Both did the same work done

But there power will be different

Lats say their work done is W then their power will be W/30 and W/40 respectively