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+//Exa 10.15

+clc;

+clear;

+close;

+//Given data :

+L=300;//m

+slope=1/20;

+w=0.80;//kg/m

+hl=30;//m

+T0=1500;//kg

+CD=L;//m

+tan_alfa=slope;

+ED=CD*tan_alfa;//m

+AC=hl;//m

+BE=hl;//m

+BD=BE+ED;//m

+//S1=w*x1^2/2/T0;//m

+//S2=w*(L-x1)^2/2/T0;//m

+h=15;//m

+ED=h;//m

+x1=L/2-T0*h/w/L;//m

+S1=w*x1^2/2/T0;//m

+S2=w*(L-x1)^2/2/T0;//m

+OG=AC-S1-x1*tan_alfa;//m

+Clearance=OG;//m

+disp(Clearance,"Clearance of the lowest point from ground(m)");

+//y=x*tan_alfa-OG;//m

+//C1=w*x^2/2/T0-(x/20-OG)

+x=T0/20/w;//m(Byy putting dC1/dx=0)

+C1=w*x^2/2/T0-(x/20-OG);//m

+disp(C1,"Minimum clearance(m)");