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+//CHAPTER 6 ILLUSRTATION 9 PAGE NO 182
+//TITLE:Turning Moment Diagram and Flywheel
+clc
+clear
+pi=3.141
+P=5*10^3//            power delivered by motor in watts
+N1=360//               speed of the flywheel in rpm
+I=60//                mass moment of inertia in kg m^2
+E1=7500//             energy required by pressing machine for 1 second in Nm
+//========================
+Ehr=P*60*60//      energy sipplied per hour in Nm
+n=Ehr/E1
+E=E1-P//           total fluctuation of energy in Nm
+w1=2*pi*N1/60//     angular speed before pressing in rpm 
+w2=((2*pi*N1/60)^2-(2*E/I))^.5//       angular speed after pressing in rpm 
+N2=w2*60/(2*pi)
+R=N1-N2//              reduction in speed in rpm
+printf('No of pressings that can be made per hour= %.0f\n Reduction in speed after the pressing is over= %.2f rpm ',n,R)