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Incoming links: Bending stiffness
Zero-rest-length spring Created 2026-10-20 Updated 2026-11-05
A zero-rest-length spring has quadratic potential energy in its actual length , with no subtracted natural length. It is a useful idealization, not an ordinary unstretched spring of arbitrary length. For an end-to-end spring on a two-link pendulum, changing the natural length changes the quadratic bending stiffness about the straight configuration.