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clear
//
//variable declaration
//Let the principal plane make anticlockwise angle theta with the plane of px with y-axis. Then
px=(200) //N/mm^2
py=(150) //N/mm^2
q=(100) //N/mm^2
theta1=(atan((2*q)/(px-py))*180)/(%pi*2)
theta2=90+theta1
printf("\n theta= %0.2f ° and %0.2f °",theta1,theta2)
p1=(px+py)/2+sqrt((((px-py)/2)**2)+(q**2))
printf("\n p1= %0.2f N/mm^2",p1)
p2=(px+py)/2-sqrt((((px-py)/2)**2)+(q**2))
printf("\n p2= %0.2f N/mm^2",p2)
qmax=sqrt((((px-py)/2**2))+(q**2))
printf("\n qmax= %0.2f N/mm^2",qmax)
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