1J20.17 - Block on Curved Surfaces

Block and curved surfaces

Click here to see movie

PIRA Classification: 1J20.17

Description: A large block is placed on a cylindrical surface. It stays on (stable). The block is then placed on a parabolic surface. It slides off (unstable). The block is finally placed on a catenary. The block will balance at various points on the curve, as in the movie above (neutral).

Special Instructions: This takes a little practice.

Condition: OK

Setup time: 1 minute

Safety Issues: None