A person of mass 50 kg carrying a load of 20 kg walks up a staircase. If width and height of each step are 0.25m and 0.2 m respectively, the work done by the man in walking up 20 steps is, (g=10 ms^(-2))

A person of mass 50 kg carrying a load of 20 kg walks up a staircase.

1.	A person of mass 50 kg carrying a load of 20 kg walks up a staircase. If width and height of each step are 0.25m and 0.2 m respectively, the work done by the man in walking up 20 steps is, (g=10 ms^(-2))
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