Centre of mass
problem
Uniformly unstable
Age
16 to 18
Challenge level
Invent shapes with different numbers of stable and unstable equilibrium points
problem
Well balanced
Age
5 to 18
Challenge level
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.
problem
Wobbler
Age
16 to 18
Challenge level
A cone is glued to a hemisphere. When you place it on a table in
what position does it come to rest?
problem
Overarch 2
Age
16 to 18
Challenge level
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?
article
High Jumping
How high can a high jumper jump? How can a high jumper jump higher without jumping higher? Read on...