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//determine law of machine and maximum efficiency
//fig.6.4 shows graph of effort vs load
//from graph
C=10 //N
//slope
m=30/500
//Law of machine is P=m*W+C
//P=0.06*W+10
//eta=MA/VR=W/25P
//table 6.5 shows calculation of efficiency for various loads
//Refer fig. 6.5
//from graph it can be seen that maximum efficiency=50% but the graph is plotted for infinitely large load
//thus
//Maximum efficiency
VR=25
Emax=100/(m*VR) //percent
printf("\nLaw of machines is P=0.06*W+10\nMaximum efficiency=%.2f percent",Emax)
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