Storing Cookies (See : http://ec.europa.eu/ipg/basics/legal/cookies/index_en.htm ) help us to bring you our services at overunity.com . If you use this website and our services you declare yourself okay with using cookies .More Infos here:
https://overunity.com/5553/privacy-policy/
If you do not agree with storing cookies, please LEAVE this website now. From the 25th of May 2018, every existing user has to accept the GDPR agreement at first login. If a user is unwilling to accept the GDPR, he should email us and request to erase his account. Many thanks for your understanding

User Menu

Custom Search
« previous next »
Pages: 1 [2] 3 4   Go Down

Author Topic: Weightless Weight  (Read 18841 times)

AB Hammer

  • elite_member
  • Hero Member
  • ******
  • Posts: 1253
Re: Weightless Weight
« Reply #15 on: May 02, 2009, 07:26:22 PM »
Alex

 It looks like a fun string you have started. Look up pulley arraignments and you will see several more possibilities.
Logged

Alexioco

  • elite_member
  • Hero Member
  • ******
  • Posts: 579
Re: Weightless Weight
« Reply #16 on: May 02, 2009, 07:27:47 PM »
I have built it (My one that is), and it works, I wouldnt of posted it otherwise..... The "T" works, it balances itself weather straight or not, I like the new idea you posted and appreciate your help alot, all I'm saying is, that I have a working model so we can't argue with that, whats told you it wont work? if its some simulation then I dont trust it...
Soon as I find the wire that connects my cam to the comp, I will post footage of it which is better than any pic...


Edit: I tried giving it a slight push and nothing happend, I tried swinging it, and if you swing it hard enough, the weight drops because: It throws its weight around so there is more force on its side, intereresting....

Alex
« Last Edit: May 02, 2009, 08:08:18 PM by Alexioco »
Logged

Lilhawk

  • Newbie
  • *
  • Posts: 33
Re: Weightless Weight
« Reply #17 on: May 02, 2009, 09:41:40 PM »
Thanks Alex.....

I tried this experiment....by this I mean I physical built your design and tried it and posted my results. They differ from yours so thats why I'm asking for info/ proof to show that I am wrong. or mabye someone else could try this?

Logged

hansvonlieven

  • elite_member
  • Hero Member
  • ******
  • Posts: 2558
    • Keelytech
Re: Weightless Weight
« Reply #18 on: May 02, 2009, 10:08:17 PM »
Has anyone really tried this? Here is a WM2D simulation that says it does not work.

Hans von Lieven
Logged

Alexioco

  • elite_member
  • Hero Member
  • ******
  • Posts: 579
Re: Weightless Weight
« Reply #19 on: May 02, 2009, 10:08:49 PM »
Quote from: Lilhawk on May 02, 2009, 09:41:40 PM
Thanks Alex.....

I tried this experiment....by this I mean I physical built your design and tried it and posted my results. They differ from yours so thats why I'm asking for info/ proof to show that I am wrong. or mabye someone else could try this?

Ah, I'm with you now, Yeh, well thats strange, Mine works just fine, the weight becomes light and lifts when you push down, hmmm I cant find that wire for my life, and I had it in my hands about 2 weeks ago.. grr  after I have watched this programme im watcing, ill have a good look

Alex
Logged

Lilhawk

  • Newbie
  • *
  • Posts: 33
Re: Weightless Weight
« Reply #20 on: May 02, 2009, 10:32:25 PM »
thanks Hans ...in your picture what angle did you start your seesaw at? if you have time I would be interested in seeing  results from steeper angles around 45 degrees.  Thats where I found a balance point with that design.
Logged

Alexioco

  • elite_member
  • Hero Member
  • ******
  • Posts: 579
Re: Weightless Weight
« Reply #21 on: May 02, 2009, 10:35:36 PM »
Quote from: hansvonlieven on May 02, 2009, 10:08:17 PM
Has anyone really tried this? Here is a WM2D simulation that says it does not work.

Hans von Lieven

Hans how can you say that it does not work? I have made the thing, you cannot campare reality with wm2d.... The weight balances and becomes light, commonsence tells you that when you look at how it works, the weight pulls one end down while at the same time resting its weight on the other end thefore its always balanced, I'm looking at my model right now, I now have it in my hand, ok now i have just put the sawsaw straight and im looking at it balanced, im now lifting it with hardly any force and every time I stop lifting, it does not fall back down...

Alex
Logged

hansvonlieven

  • elite_member
  • Hero Member
  • ******
  • Posts: 2558
    • Keelytech
Re: Weightless Weight
« Reply #22 on: May 02, 2009, 10:41:03 PM »
@ Alexioco,

I don't know what you have built so I cannot comment on this. However I will state that the device as drawn cannot work. Common sense does not validate the idea. Do you seriously think we would build cranes the way we do if we could lift weights without effort in this manner?

Hans von Lieven
Logged

Alexioco

  • elite_member
  • Hero Member
  • ******
  • Posts: 579
Re: Weightless Weight
« Reply #23 on: May 02, 2009, 10:45:46 PM »
Quote from: hansvonlieven on May 02, 2009, 10:41:03 PM
@ Alexioco,

I don't know what you have built so I cannot comment on this. However I will state that the device as drawn cannot work. Common sense does not validate the idea. Do you seriously think we would build cranes the way we do if we could lift weights without effort in this manner?

Hans von Lieven

Its just an idea I made that works, and I wanted to share it with you, nevermind...

Alex
Logged

hansvonlieven

  • elite_member
  • Hero Member
  • ******
  • Posts: 2558
    • Keelytech
Re: Weightless Weight
« Reply #24 on: May 02, 2009, 10:50:19 PM »
Quote from: Lilhawk on May 02, 2009, 10:32:25 PM
thanks Hans ...in your picture what angle did you start your seesaw at? if you have time I would be interested in seeing  results from steeper angles around 45 degrees.  Thats where I found a balance point with that design.

Yes Lilhawk, you can find a point of equilibrium if the angle is steep enough. You can even get the side of the arm with the weight to go up, however you will notice that though the arm goes up, the weight actually goes down.

Hans von Lieven
Logged

Alexioco

  • elite_member
  • Hero Member
  • ******
  • Posts: 579
Re: Weightless Weight
« Reply #25 on: May 02, 2009, 10:58:58 PM »
Quote from: hansvonlieven on May 02, 2009, 10:50:19 PM
Yes Lilhawk, you can find a point of equilibrium if the angle is steep enough. You can even get the side of the arm with the weight to go up, however you will notice that though the arm goes up, the weight actually goes down.

Hans von Lieven

Hans, now I agree with you on that, the weight does start to go down at a certain point, but on my new design, it doesnt go down at all... maybe its to do with the length of the cord/string...
Logged

Lilhawk

  • Newbie
  • *
  • Posts: 33
Re: Weightless Weight
« Reply #26 on: May 02, 2009, 11:07:08 PM »
Thanks Hans....that coincides with my experiment...

Alex ...just get the info of your build which is simple=  left tie point of seesaw to seesaw pivot distance
                                                                         right pully of seesaw to  seesaw pivot distance
                                                                         bottom pully to  seesaw  pivot  distance
that should be your build ...it might help me and others to prove you right

Logged

Alexioco

  • elite_member
  • Hero Member
  • ******
  • Posts: 579
Re: Weightless Weight
« Reply #27 on: May 02, 2009, 11:11:04 PM »
Quote from: Lilhawk on May 02, 2009, 11:07:08 PM
Thanks Hans....that coincides with my experiment...

Alex ...just get the info of your build which is simple=  left tie point of seesaw to seesaw pivot distance
                                                                         right pully of seesaw to  seesaw pivot distance
                                                                         bottom pully to  seesaw  pivot  distance
that should be your build ...it might help me and others to prove you right

you are right, im a little ignorant that way, sorry, I just went to my mates house to get a lead off him so im posting the footage... brb

Alex
Logged

Lilhawk

  • Newbie
  • *
  • Posts: 33
Re: Weightless Weight
« Reply #28 on: May 03, 2009, 03:44:48 AM »
Ok I found perfect flat balance. ::) ... with this design.   

but it has no lift to the load....it will support the load and the seesaw should move easily

the load just stays static with this. 

Probably won't go any farther with this
Logged

hansvonlieven

  • elite_member
  • Hero Member
  • ******
  • Posts: 2558
    • Keelytech
Re: Weightless Weight
« Reply #29 on: May 03, 2009, 04:19:16 AM »
@ Lilhawk,

This is an interesting one. It does something I did not expect and I am at this moment at a loss to explain. Have a look at the simulation.

Hans von Lieven

Edit:  Surely it cannot do this in the real world. Look at seesaw3. Milkovic eat your heart out !  ;D
« Last Edit: May 03, 2009, 04:39:31 AM by hansvonlieven »
Logged
Pages: 1 [2] 3 4   Go Up
« previous next »