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+//Example 21 // frequency ,energy and maximum velocity
+clc;
+clear;
+close;
+c=1;//N-m 
+m1=6;//gm
+m2=2;//gm
+mu=((m1*m2)/(m1+m2))*10^-3;//kg
+fr=((1/(2*%pi))*sqrt(c/mu));//vibrations/sec
+disp(fr,"frequency of oscillations is ,(vibrations/s)=")
+td= 1+(1/3);//cm
+e=((1/2)*c*(td*10^-2)^2);//joule
+disp(e,"energy is,(joule)=")
+y=((1/2)*m2*10^-3)+((1/2)*(1/3)^2*m1*10^-3);//
+v1=sqrt((e/y));//m/sec
+disp(v1,"maximum velocity of smaller mass is,(m/seconds)=")
+//velocity is calculated wrong in the book