Consider a column of aluminium alloy having modulus of elasticity 70 x 105 N/cm2 and a yield strength of 50 x 102 N/cm2. The least value of slenderness ratio will be closer to
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Two steel struts have the same cross-sectional areas. One is a solid one and the other is a hollow with internal diameter three-fourth of the external diameter. The ratio of the strength of the solid steel strut to that of the hollow one is
All of the following statements about kern are correct, except
The ratio of the core of a circular section to the area of circular section when used as a short column is
A steel column of rectangular section (15 mm × 10 mm) and length 1.5 m is simply supported at both ends. Assuming modulus of elasticity, E = 200 GPa for steel, the critical axial load (in kN) is _____ (correct to two decimal places)
Euler’s formula gives 5 to 10% error in crippling load as compared to experimental results in practice due to
The ratio of critical loads a column can carry when it end conditions are best and worst is
For the case of a slender column of length l, and flexural rigidity E1 built-in at its base and free at the top, the Euler’s critical buckling load is
For a long slender column of uniform cross-section, the ratio of critical buckling load for the case with both ends clamped to the ease with both ends hinged is
The column of length 240 cm, area of cross- section 20 cm 2, moment of inertia 1XX = 720 cm4 and Iyy = 80 cm4 is subject to buckling load. The data corresponds to slenderness ratio
A column of rectangular cross-section (IXX > IYY) is subject to an axial load. What is the axis about which the column will have atendency to buckle?
The minimum axial compressive load, P, required to initiate buckling for a pinned-pinned slender column with bending stiffness EI and length L is
If the length of a column is double, the criteria load becomes