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Q.

 A reinforced-concrete column is subjected to compression by a certain load. Assume that modulus of elasticity of concrete is one-tenth of that of iron and the cross-sectional area of the iron is one-twentieth of that of concrete. If F c F 1 =n  Where F c  is the part of the load acting on concrete and  F 1 ,   is the part of the load acting on iron, then find the value of n.

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answer is 2.

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Detailed Solution

Fc=ΔllAcYcand F1=ΔllA1Y1 
It follows that F C F 1 =2    

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