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The critical frequency of the helical spring

The governing equation for the translational vibration of the spring placed between two flat and parallel plates is

Assume that $\rho$ is...

3) Mechanical Properties of Materials - From The Ductility and Brittleness

Ductile Materials: Any material that can be subjected to large strains before it fractures is called a ductile material. Mild steel, as discussed previously, is a typical example. Engineers often choose ductile materials for design because these materials are capable of absorbing shock or energy, and if they become overloaded, they will usually exhibit large deformation...