....one and the other,alike or equally exercise a similar game ,that we can understand better looking to some simplified stabile/mobile sculptural works of Alexander Calder.
Self moving "seesaw effect" of Milkovic needs four spare parts only
fulcrum
lever
stabile/fixed mass
mobile/free mass,a common pendulum
You know to play it...a swinging lever.
A possible self moving "seesaw effect"/Evert style ,needs four spare parts,also
fulcrum
lever
stabile/fixed mass
mobile/free masses,asymmetric pendulum
You can discover to play it...a rotating lever.
All the Bests! / Alex