Question

1. A man of mass 50 Kg runs up a flight of stairs having a rise of 5m, is 4s. a) What is the work done by the man? b) What is the average power developed by the man? 2. In the force – displacement graph, calculate the work done during a) the interval 0

Answer 1

Work done by the man is zero as force and displacement is not present simultaneously. As work done bye man = 0 so the average power of the man would also be = 0.