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clear
//
w=20000.0 //weight of upper block
o=15.0 //The angle of friction for all surfaces of contact
u=tan(o) //coefficient of friction
//R1 R2 are forces
Or1=15.0 //angle force R1 makes with x axis
Or2=35.0 //angle force R2 makes with Y axis
R2=w*sin((90-Or1)*3.14/180.0)/sin((90+Or1+Or2)*3.14/180.0)
//applyig lamis theorem on block B
Or1=15.0 //angle force R3 makes with Y axis
Or2=35.0 //angle force R2 makes with Y axis
P=R2*sin((180-Or1-Or2)*3.14/180.0)/sin((90+Or1)*3.14/180.0)
printf("\n Force = %0.3f N",P)
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