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+//find x-sectional dimensions of the bracket
+clc
+//solution
+//given
+//refer fig 5.28
+P=6000//N
+q=45//deg
+f=60//N/mm^2
+//let t be thickness and b=2*t//gevin
+//A=b*t//mm^2
+//A=2t^2//mm^2
+//Z=t*b^2/12
+//Z=4*t^3/6//mm^3
+Ph=6000*cos(45)//N//horizontal component of P
+Mh=Ph*75//N-mm
+//fh=Mh/Z
+//fh=477225/t^3//N/mm^2
+Pv=6000*sin(45)//N
+Mv=Pv*130//N-mm
+//fov=Pv/A//dirct stress due vertical component
+//fov=2121/t^2//N/mm^2
+//fbv=Mv/Z//max bednding stress
+//fbv=827190/t^3//N/mm^2
+//f=477225/t^3+2121/t^2+827190/t^3
+//60=1304415/t^3 + 2121/t^2
+//using hit and trial,we get t=28.4 mm
+t=28.4//mm
+b=2*t
+printf("the value of thickness is ,%f mm\n ",t)
+printf("the value of thickness is ,%f mm",b)