Duplicate Question
The question on this page has been marked as a duplicate question.
Original Question
The efficiency of a machine is 80%. Determine the work done by a person using this machine to raise a load of 200kg through a v...Asked by avivabliss
the efficiency of a machine is 80% determine the work done of a person using the machine to raise a load of 250kg through a vertical distance of 3.0m (take g =10ms-2).
Answers
Answered by
bobpursley
g is not 10m/s^2 anywhere on Earth. I have never understood folks doing that, unless they do not know how to use a calulator.
work= 250*g*3.0 /.80
work= 250*g*3.0 /.80
Answered by
henry2,
F = M*g = 250*10 = 2500 N.
Wo = F*d = 2500*2500*3 = 7500 J.
Wo/Wi = 0.8,
7500/Wi = 0.8,
Wi =
Wo = F*d = 2500*2500*3 = 7500 J.
Wo/Wi = 0.8,
7500/Wi = 0.8,
Wi =
There are no AI answers yet. The ability to request AI answers is coming soon!