A person of mass 50 kg carrying a load of 20 kg walks up a staircase.if the width and height of each step is 0.25m and 0.2m respectively,the work done by the man in walking up 20 steps is?
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total x 6m
w=fx
=mgx
=70×10×6
=4200j
x={(.25)^2+(.2)^2}^1÷2
=.33
we have 20 stair then total displacement .33×20
6
w=fx
=mgx
=70×10×6
=4200j
x={(.25)^2+(.2)^2}^1÷2
=.33
we have 20 stair then total displacement .33×20
6
pinkspink23:
the correct answer should be 2800.
where did i mistake?
how did u get 6?
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