A person of mass 50 kg carrying a load of 20 kg walks up a staircase. The width and height of each step are 0.25 m and 0.2 m respectively. What is the work done by the man in walking 20 steps?(Assume g = 10m/s^2)
(a) 800 J
(b) 1600 J
(c) 2000 J
(d) 2800 J
I got this question in class test.
I would like to ask this question from Work Done by a Variable Force topic in chapter Work, Energy and Power of Physics – Class 11