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+
+//To Calculate the time for which the Person slept according to clocks
+
+//Example 47.1
+
+clear;
+
+clc;
+
+delt=6;//Duration of Sleep according to person's watch
+
+v=3*10^7;//Speed of the train(in which the person is sitting) in m/s
+
+c=3*10^8;//Speed of light in m/s
+
+delt1=delt/sqrt(1-(v/c)^2);//Duration of sleep in the ground frame
+
+delt1h=int(delt/sqrt(1-(v/c)^2));//Duration of sleep (in whole number of hours) in the ground frame
+
+printf("Duration of sleep according to the clocks = %.0f hours ",delt1h);
+
+delt1m=(delt1-delt1h)*60;//Duration of sleep (in remaining ) in the ground frame
+
+printf("%.1f minutes",delt1m);