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Author Topic: A Pendulum Idea  (Read 8213 times)

johnny874

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A Pendulum Idea
« on: November 22, 2011, 12:44:46 AM »
   Andrea,
  I have seen a few of your videos and plan on watching more.
 I thought of this and would like to know what you think.
  If a weight swings from fulcrum 2 and at a certain point (B), a line from
fulcrum 1 shortens it's path...  ?
 
                                                         Jim
 
« Last Edit: November 23, 2011, 12:27:27 PM by Alexioco »

johnny874

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Re: A Pendulum Concept for Andrea to Consider
« Reply #1 on: November 22, 2011, 03:16:11 PM »
  Andrea,
 If this is an idea you might be interested in, I might be able to build a small demonstration for you.
This might be something everyone would find interesting. And if used with what you've been working on, maybe you could get it to do more.

                                                                                                              Jim

johnny874

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Re: A Pendulum Concept for Andrea to Consider
« Reply #2 on: November 23, 2011, 12:23:25 AM »
   Andrea,
 This is the idea more clearly.
 By having a line go around a wheel, it will shorten the path of the weight when the line becomes tight.
 When you want the weight to slide outward again, have the wheel narrow. This will allow the line to slip off of it..Once the line is off the flat part of the wheel, it will pull off of it completely Then the line will need to be above the wheel to repeat the process.
 A second permamently fixed weight of equal mass may be needed at the bottom of the pendulum. Pulleys if needed, will help to pull the moveable weight evenly towards the fulcrum.
 
                                                                             Jim

johnny874

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Re: A Pendulum Idea
« Reply #3 on: November 23, 2011, 04:37:33 PM »
   Andrea & all,
  Here is a video that shows how a cog can work to shorten the path of a swinging weight.
 If a fixed weight of 1 kg is the primary weight, then a smaller secondary weight that is about 100 or 200 grams could slide up and down the shaft of the primary weight.
 This could increase the force of the primary sufficiently to allow for a perpetual motion.
 I am not sure but do believe a pendulum requires little extra energy to maintain it's swing.
 
                                                                                      Jim
 
http://youtu.be/ilsB_KtTSAU
 
edited to add; sorry about the poor lighting.