A MAN OF MASS 15KG RUNS UP A SET OF STEPS OF HEIGHT 5M WHAT IS THE WORK DONE AGAINST GRAVITY

1 answer

15 kg is very light man (typo?)
force in newtons times distance in force direction in meters gives Joules
= 15 kg * 9.81 m/s^2 * 5 meters = 736 Joules
if g = 9.81 m/s^2 on earth