There are 2 NRICH Mathematical resources connected to Moment of a force, you may find related items under Mechanics.
Broad Topics > Mechanics > Moment of a force
A cone is glued to a hemisphere. When you place it on a table in what position does it come to rest?
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?