Mechanical Waves – Long Spring

Quick Answer: Mechanical Waves – Long Spring is a 1.5 m flexible coil spring built for classroom demonstrations of transverse and longitudinal wave motion, giving students a hands-on, visual complement to textbook wave explanations — a durable, export-ready choice for institutions sourcing dependable physics lab equipment India and reliable laboratory equipment school India wide.

Construction and Specifications

The spring is formed from a single continuous coil with an unstretched length of 1.5 m, giving students enough travel distance along the coil to observe a wave pulse move, reflect and return clearly during a demonstration. It is built for high toughness and a strong returning force, so it can be stretched, displaced and released repeatedly across successive classes without losing its coil shape or its ability to spring back to its original length. To demonstrate wave motion, the spring is typically stretched out along a table, floor or corridor and anchored at one end. A sideways flick of the free end sends a transverse wave rippling along the coil, while a sharp push-pull motion along the spring's own axis produces a longitudinal wave, visible as a moving compression and rarefaction pattern travelling through the coils, similar to the familiar "Slinky" wave demonstration. Used this way, the spring lets students observe wave speed, wave reflection at a fixed end, and the visual difference between transverse and longitudinal waves — a distinct use case from experiments that focus on the spring's elastic deformation and force-extension (Hooke's law) behaviour.

Technical Specifications

Related Instruments

Institutions building out a broader wave-phenomena curriculum may also want to review our Physics Lab Equipment range, including the Wave Tank and the Ripple Tank, both used to study reflection, refraction, interference and diffraction in water waves as a complementary resource for teaching wave behaviour across different media.