it acts like a pair of scales the heavier one moving down and the lighter one going up.
why?
That would be a first class lever.
It is a lever
Lever
"lever"
LEVERThe long board they sit on acts like a lever.
A balance or lever.
a lever(toot)
levers. a simple machine
a scale, a teeter toter
A balance board is a device used for recreation or athletic training which consists of a seesaw-like level or circular board upon which a person attempts to balance.
A balance board is a device used for recreation or athletic training which consists of a seesaw-like level or circular board upon which a person attempts to balance.
That would be a first class lever.
That would be a first class lever.
lever. More specifically in the case of a see-saw, the long board is a balance beam.