Assorted Steel Spring Set

This assorted spring set contains 150 springs — a mix of compression and extension springs — spanning a broad range of sizes. Lengths run from 15mm to 300mm, diameters from 4mm to 18mm, and wire thicknesses from 16 s.w.g. to 32 s.w.g. The range is well suited to open-ended physics experiments on mass-on-a-spring motion, Hooke's law, simple harmonic motion, and potential energy. The sturdy variety lets students explore how spring geometry affects stiffness and the natural period of oscillation.