Why this seesaw is working against physics laws

[vikram_gupta11]

Dear Webby Sir,
The length of tube is 2 meter and this tube is mounted 60 cm.under the fulcrum and it's rest part 1.6 meter will be mounted above fulcrum.
The counterweight arm will be designed in this way (curved upside 60 cmt)that center of mass will be equal to fulcrum.
The device will be in tilted position if you take 18 kg counterweig ht.but if possible then try to take it 50 degree in rest position.
There will be no problem up to 90 degree to tilt it but after 90 degree there will be need of only 10 degree more to tilt it so that the ball could fall down.
Now calculate it .as far as I think this mechanism is completely an overunity mechanism.

[vikram_gupta11]

Hello Webby Sir,
The right one is correct as ball is positioned at lower part of tube.
But in third one just change the position of lower and upper side of tube.the orange circle is lower part of tube and blue circle is upper part.in this position the ball is falling down from lower to towards upper and after hitting upper side the arm is reversing and ball is again falling down from upper to lower side of tube.

[vikram_gupta11]

In this mechanism the counterweights arm will be curved upside to locate the center of mass equal to fulcrum.

[vikram_gupta11]

Hello Webby Sir,
What's your thoughts?

[vikram_gupta11]

All mathematics is favour in this mechanism as well as technical.