A rigid beam \(B D\) is suspended from two rods \(A B\) and \(C D\) as shown in Fig. 13.29. Rod \(A B\) is of steel of \(20 \mathrm{~mm}\) diameter and rod \(B\) is of copper of \(25 \mathrm{~mm}\) diameter. At what distance from rod \(A B\) the load \(P\) be applied if the beam is to remain horizontal? Calculate the stresses in the rods if \(P=25 \mathrm{kN}\).

Take \(E_{\mathrm{s}}=200 \mathrm{GPa}\) and \(E_{\mathrm{c}}=100 \mathrm{GPa}\)

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A 1.5m 2m B Fig. 13.29 P D 1m