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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)
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