Elongation is the tendency of a member to extend or stretch when subjected to a compressive force.

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Multiple Choice

Elongation is the tendency of a member to extend or stretch when subjected to a compressive force.

Explanation:
Elongation refers to a length increase, which happens when a member is pulled in tension. When a member is subjected to compressive force, it shortens along its length, not lengthens. In axial loading terms, the change in length ΔL is positive for tension and negative for compression, so compression causes shortening (ΔL < 0). Buckling can occur under enough compression, but that’s a lateral/overall instability, not an elongation along the axis. So the statement that elongation occurs under a compressive force is false.

Elongation refers to a length increase, which happens when a member is pulled in tension. When a member is subjected to compressive force, it shortens along its length, not lengthens. In axial loading terms, the change in length ΔL is positive for tension and negative for compression, so compression causes shortening (ΔL < 0). Buckling can occur under enough compression, but that’s a lateral/overall instability, not an elongation along the axis. So the statement that elongation occurs under a compressive force is false.

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