Pendulum Ball
Orange Ball
Lever - [lee-ver] - noun. a rigid bar that pivots about one point and that is used to move an object at a second point by a force applied at a third: one of the simple machines.
I have not failed. I've just found 10,000 ways that won't work. - Thomas Edison - Inventions include the phonograph, motion picture camera, and light bulb.

Use this tag: #thisismycontraption

The videos below were taken by visitors who used levers in their contraptions. If you've taken a video of your contraption & posted it on your blog or any social network use the tag thisismycontraption so we can find it & share it on our site & in our exhibit.