Question

What is loaded and unloaded slinky?
From which slinky would the waves will propagate well?

Answer 1

loaded slinky with load and unloaded slinky without load.
unloaded slinky will propagates well.

Loaded slinky is not good to see wave propagation as it is stretched more.

Answer 2

The Slinky is a toy or an object that tends to resist a change in its motion. It converts potential energy into kinetic energy when gravity acts on it. It is used as a compression and tension spring to measure the energy outputs.

When the slinky lies freely horizontally on a frictionless surface, it is called as an unloaded slinky. However, when there is a tension acting on the slinky, it is called as a loaded slinky.

Waves propagate well through the loaded slinky when compared with the unloaded slinky.