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+//CHAPTER 2,ILLUSTRATION 4 PAGE 59
+//TITLE:TRANSMISSION OF MOTION AND POWER BY BELTS AND PULLEYS
+clc
+clear
+//====================================================================================
+//INPUT
+D1=.5//            DIAMETER OF 1ST SHAFT IN m
+D2=.25//           DIAMETER OF 2nd SHAFT IN m
+C=2//              CENTRE DISTANCE IN m
+N1=220//           SPEED OF 1st SHAFT
+T1=1250//          TENSION ON TIGHT SIDE IN N
+U=.25//            COEFFICIENT OF FRICTION
+PI=3.141
+e=2.71
+//====================================================================================
+//CALCULATION
+L=(D1+D2)*PI/2+((D1+D2)^2/(4*C))+2*C
+F=(D1+D2)/(2*C)
+ALPHA=asind(F)
+THETA=(180+(2*ALPHA))*PI/180//   ANGLE OF CONTACT IN radians
+T2=T1/(e^(U*THETA))//            TENSION ON SLACK SIDE IN N
+V=PI*D1*N1/60//                   VELOCITY IN m/s
+P=(T1-T2)*V/1000//                POWER IN kW
+//====================================================================================
+//OUTPUT
+printf('\nLENGTH OF BELT REQUIRED =%f m',L)
+printf('\nANGLE OF CONTACT =%f radians',THETA)
+printf('\nPOWER CAN BE TRANSMITTED=%f kW',P)