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+//CHAPTER 6 ILLUSRTATION 2 PAGE NO 176
+//TITLE:Turning Moment Diagram and Flywheel
+clc
+clear
+pi=3.141
+N1=225//              maximum speed of flywheel in rpm
+k=.5//                radius of gyration of flywheel in m
+n=720//               no of holes punched per hour
+E1=15000//            energy required by flywheel in Nm
+N2=200//              mimimum speedof flywheel in rpm
+t=2//                 time taking for punching a hole
+//==========================
+P=E1*n/3600//              power required by motor per sec in watts
+E2=P*t//                   energy supplied by motor to punch a hole in N-m
+E=E1-E2//                  maximum fluctuation of energy in N-m
+N=(N1+N2)/2//              mean speed of the flywheel in rpm
+m=E/(pi^2/900*k^2*N*(N1-N2))
+printf('Power of the motor= %.3f watts\n Mass of the flywheel required= %.3f kg',P,m)