Aisle 12No. 221 of 460
Splashery
Newton's Cradle
290,000 small parts. Assembled in your browser.
Empty. Now look down.

Swipe across the pack to tear it open.
Press and hold. It pulls itself together.
Let go to drop it.
It stays in its pack here. The Playground has the rest.
Toys · Built from a recipe
Newton's Cradle
Newton's cradle is a row of steel balls, each hung on two strings so it can only swing in one line.
Play with it in the Playground
How to play
Drag a ball out to the side and let go. Or tap to lift the end ball.
Toy facts
- Item
- No. 221 of 460
- Shelf
- Aisle 12, Toys
- Kind
- Built from a recipe
- Small parts
- 290,000
- Made from
- Drag a ball out to the side and let go.
- Sound
- Yes
- Batteries
- None
- Assembly
- It does that itself
- Licenses
- Own work (made in the page)
- Price
- $0.00
Small parts are the splats in its usual build on a computer. A phone may draw fewer.
Its controls
| Control | Kind | Range | Start |
|---|---|---|---|
| Lift and let go | Tap | ||
| Swing | Button |
About it
Newton's cradle is a row of steel balls, each hung on two strings so it can only swing in one line. Lift the end ball and let go: it strikes the row, the ball at the far end flies out, and the balls in between barely move. Let go of two and two fly out.
It shows two rules of physics at once: in each knock both the momentum and the energy carry through the row, so the same number of balls leaves as arrived. Each clack turns a little energy into sound and heat, so the swings slowly die away. Drag any ball out (the balls beside it come too) and let go, or tap to lift the end ball.
Details
- Splats
- Opens at 200,000 at Mid Detail, 60,001 at Low, and up to 420,000 at Max
Sources and credits
Made in Splashery. Its code is MIT.



