Play seesaw...

[iacob alex]

  ...sorry about the wrong address.

    So,again you can play an imaginary seesaw on Potsdamer Platz,in Berlin at:

    www.youtube.com/watch?v=TCTdj2qJrS8

         All the best! / Alex

[iacob alex]

.....in a different,amazingly manner,if you take a look at:

      http://www.youtube.com/watch?v=F_5z3VVqoJk&feature=related

Then,think about the topic of this forum.

With a fulcrum,a lever and a single movable mass...you can build,test and enjoy your own (PM) "toy".

       All the best! / Alex

[DreamThinkBuild]

Hi Alex,

There is a Japanese Lego designer, Yoshihito Isogawa, who has some inspirational little machines.

Rolling gear, Scale this concept up and replace the person with this on the end of the lever from your last video.
http://www.isogawastudio.co.jp/legostudio/modelgallery_model/a047.html

A flying lever. 
http://www.isogawastudio.co.jp/legostudio/modelgallery_model/a051.html

Many more ideas on his site.
http://www.isogawastudio.co.jp/legostudio/index.html

[iacob alex]

....the simplest possible mechanical game with gravity and inertia.

All you need :a fulcrum,a bar/lever and two masses (one fixed,one movable).

To play "lego" is your option,but the most important thing is as you develop this simple game...

       All the best! / Alex

[gravityblock]

http://www.youtube.com/watch?feature=player_detailpage&v=pCvx5gSnfW4#t=135s

GB