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?
Balancing interactivity with springs and weights.
If you were to set the X weight to 2 what do you think the angle
Attach weights of 1, 2, 4, and 8 units to the four attachment
points on the bar. Move the bar from side to side until you find a
balance point. Is it possible to predict that position?
Balance the bar with the three weight on the inside.