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+clear
+//
+l=6.0 //length of ladder
+u1=0.4 //coefficient of friction between the wall and the ladder
+w=200.0 //weight of ladder
+u2=0.25 //coefficient of friction between floor and the ladder
+wl=900.0 //weight of load
+ll=5.0 //distance of load
+//force balancing
+//Na Nb normal reaction at A and B
+//Fa Fb friction at A and B
+//Fa=u2*Na
+//Fb=u1*Nb
+//Na+Fb=w+wl
+//Fa=Nb
+Nb=(wl+w)*u2/(1+u2*u1)
+Na=Nb/u2
+Fa=u2*Na
+Fb=u1*Nb
+//sum of all moments about a is =0
+temp=((w*l*0.5)+(wl*ll)-(Fb*l))/(Nb*l)
+o=atan(temp)*180/3.14
+printf("\n Angle of inclination is %0.3f degrees",o)