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Q.

A concrete column is reinforced with an iron rod in the middle. It is subjected to compression by a certain load. Assuming that the modulus of elasticity of concrete is one-tenth that of iron and the area of cross section of the iron is one-twentieth that of concrete, find the portion of the load acting on the concrete.

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a

23rd of load

b

13rd of load

c

14th  of load

d

25th  of load

answer is A.

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Detailed Solution

Load on concrete =Y⋅20AY⋅20A+10Y⋅A=23
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A concrete column is reinforced with an iron rod in the middle. It is subjected to compression by a certain load. Assuming that the modulus of elasticity of concrete is one-tenth that of iron and the area of cross section of the iron is one-twentieth that of concrete, find the portion of the load acting on the concrete.