Milkovic's Pendulum

[kolbacict]

https://www.youtube.com/watch?v=NuwNxfs5ocE
Well, two pendulums can swing sinhronization on the one side of the lever arm.
not necessarily at opposite ends.

[Johnsmith]

https://www.youtube.com/watch?v=NuwNxfs5ocE
Well, two pendulums can swing sinhronization on the one side of the lever arm.
not necessarily at opposite ends.

  They can. With what I am talking about is that one pendulum does not swing. It is a counterweight. If you consider how
a draw bridge is lifted, with this hinged table, it is an example. https://www.youtube.com/watch?v=zcYxSXz82EQ
If the weight on the right were a pendulum that did not swing, it would be the same thing as having an idle pendulum.
I probably will need to continue with design so everyone can better understand it. After I have my camera, I might make
a video to show what I am talking about. It would be to show what I mean by timing and when the swinging pendulum
would need to be lifted.

[kolbacict]

Okay, tomorrow make a Maxwell pendulum on the balance beam.
And pulling the lever at certain points in time, its oscillations will become undamped.
I hope.

[Johnsmith]

Okay, tomorrow make a Maxwell pendulum on the balance beam.
And pulling the lever at certain points in time, its oscillations will become undamped.
I hope.

  I may need to stay with the drawings. I do have my build that I am doing. Next month I might
be able to do a demonstration. It will be more work for me to do. And this gets into engineering.
I have worked out a lot of the design. And to try for a working build like any build will be
challenging. It will need to be done in steps. And it might be better if someone else that is
interested tried this. I do need surgery and so I need to focus on that goal.

p.s., the purpose of this thread was to get other people interested in how something might work.
The math for the period of a pendulum is easy enough to do. And then a weight on the end of a
piece of string will let them actually see the math in motion. The top of the string could be dict
taped in a door way. It doesn't need to be anything fancy to understand the basic principles involved.
That is the first thing that someone would need to understand. Then after that, how could
leverage and pulleys lift the pendulum higher? If taken one step at a time then they might actually
understand it.

[Johnsmith]

 With that said, I can go over the math and explain how to do it on a calculator. With knowing the period
of a pendulum, you can know its velocity. And then you can calculate its inertia. Basically if you have 2
pendulums that have the same weight but only one will swing, the one that swings will develop more
downward force lifting the counterbalance pendulum.
And when the pendulum that can swing is getting ready to change directions, the pendulum that is the
counterbalance will lift the other pendulum. I can make some basic diagrams and show how math influences
a double oscillating pendulum. Once someone becomes familiar with each step of the math, they'll find out
that it's not that difficult. It's just working a couple of problems will show you that you can do it.
So over the next couple of days when I have time that is what I'll do. I think with diagrams and by showing
the math then who wants to can work the problems on their calculator then people will understand why such
a pendulum rocks from one side to the other.

This is the first example. I thought why wait, okay?
The crossbar is 50 cm to each side from the middle fulcrum. Each pendulum is 50 cm as well. Or everything is
20 inches. Same thing. And the inward angle of the swinging pendulum is 22.5º. With this online calculator,
http://www.carbidedepot.com/formulas-trigright.asp
side c is .50 (meters) and angle a is 22.5. And side b is .46 (meters). This means that the bob (weight) on the
pendulum will drop 4 cm. Side c minus side b.
With a 45º angle, it's about a 15 cm drop and will swing faster. What needs to be known is when
a pendulum swings from the left side to the right side and back again, how far is it from its starting point?
With calculating the acceleration of a pendulum, it's 9.81 m/s * sin x. And when put into a calculator for
22.5 it's 3.75 m/s and for 45 it.s 6.93 m/s.