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+clear
+//
+W = 12000.0 //Load
+N=3.0 //number of movable pulleys
+VR=2*N //Velocity Ratio
+L=0.05 //Efficiency loss in each pulley
+Efficiency=0.85
+MA=Efficiency*VR //Mechanical advantage
+P = W/MA //Effort
+printf("\n Effort is %0.3f N",P)