Slinky

[viewer]

[iwacelect]

cheap bugger used a plastic slinky, nowhere near as acurate as the old metal slinky's

he IMHO doesn't explain it easily enough, the inertia of the top of the slinky over comes the effect of gravity until the top reaches the bottom.

imagine if you let go of the slinky in a wieghtless vacuum, the 2 ends would be pulled towards the middle at EXACTLY the same speed, whats happening in the video is the top of the once released slinky travels towards the bottom at exactly the same retention as the effect of gravity agianst it, ergo the bottom is stable until collapse.

I bet if you did the weightless experiment, you'd find the movement of both would be X, the top of the falling slicky is 2X, approx 2 X 9.8 metres/sec squared....

Its basic... but great to watch