Q. A hollow cylindrical column of steel supports a load of . The inner and outer radii of the column are and respectively. Assuming the load distribution to be uniform, calculate the value of compressional strain in terms of of the column. (Take Young's modulus of steel )

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Answer: 3.75

Solution:

Area of cross-section of the cylindrical column,

Mass supported on the column,
Therefore, compressional force on the column,

Compressional strain,





....(Rounding off to decimal places.)