Bricks are 20cm long and 10cm high. How high could an arch be built
without mortar on a flat horizontal surface, to overhang by 1
metre? How big an overhang is it possible to make like this?
Consider the mechanics of pole vaulting
A cone is glued to a hemisphere. When you place it on a table in
what position does it come to rest?
How high can a high jumper jump? How can a high jumper jump higher without jumping higher? Read on...
Invent shapes with different numbers of stable and unstable equilibrium points
Balancing interactivity with springs and weights.
Help the bee to build a stack of blocks far enough to save his
friend trapped in the tower.
Exploring balance and centres of mass can be great fun. The
resulting structures can seem impossible. Here are some images to
encourage you to experiment with non-breakable objects of your own.