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+//Wagon strikes bumper post
+//refer fig. 16.19 
+W=500
+//Component of weight down the plane Wd
+Wd=W/100  //kN
+//Track resistance Rt
+Rt=2.5  //kN
+//u=0
+s=30  //m
+//Let the velocity of wagon while striking be v m/sec
+//Applying work energy equation
+v=1.716  //m/sec
+//Let spring compresion be x
+k=15000  //kN/m
+//Applying work energy equation and solving quadratic equation
+x=100.2  //mm
+printf("\nThe spring will be compressed by %.1f mm",x)
+  
+
+
+
+
+