Balanced structures

A student rides a bike balanced 2 m off the ground. Look at the structure on the left and suggest a reason why the student and the bike do not fall off the beam?

 

Solution

Why would you advise a tall, heavy adult body-builder not to ride the bike?
View the video on the right.

 
Explain why a sumo wrestler is more stable when he spreads his legs, bends his knees and lowers his body closer to the ground?

Image from Google

Explain how this cork can balance on the tip of a nail. Why is it so stable?

 

 

 

 

 

Razman's Autos designed two go-karts that can accelerate around corners at great speeds. Which design would you recommend?

The centre of gravity is shown in blue.

Solution
You can make your own stability toys. Modify the one shown on the right and create your own crazy toys. Don't forget, the centre of gravity must be below the point of rotation. The lower the centre of gravity the more stable the toy.
Continue with yachts