(m * g * h) / efficiency
convert cm to m ... answer is in Joules
The efficiency of a machine is 75%.If this machine raises a load of 150kg through a vertical height of 20cm,Calculate the workdone by labourer using the machine
3 answers
W = F * h = (150*9.8) * 0.20 = Work done by machine in Joules.
W/0.75 = Work done by laborer.
W/0.75 = Work done by laborer.
I really don't know the answer pls help with this question
2 answers