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### Author Topic: re: energy producing experiments  (Read 116697 times)

#### Delburt Phend

• Full Member
• Posts: 201
##### Re: re: energy producing experiments
« Reply #390 on: October 14, 2022, 05:07:23 PM »
No: for 4 m/sec you will need to lift the bob to the same height. The angle is less in the larger pendulums but the height is the same. One of the YouTube  Delburt Phend videos shoes an interrupted pendulum with the rise being maintained; so it has to be equal on both sides.

Springs don’t work.

I was not proposing a momentum transfer in this 3 pendulum discussion. I was only pointing out that the same linear Newtonian momentum (40 units) can be in any size pendulum. The three pendulums have a different length and a different angular momentum: for the same real momentum (40 kg m/sec)

A momentum transfer does however occur in a cylinder and spheres. The momentum of the large mass transfers to the small mass.  Did you see this one? https://www.youtube.com/watch?v=YaUmzekdxTQ  It transfers the motion twice.

#### Kator01

• Hero Member
• Posts: 886
##### Re: re: energy producing experiments
« Reply #391 on: October 14, 2022, 11:17:06 PM »
ok, looks like I misunderstood this.

Did you test springs in practical setups ? I did, but there are certain problems which can not mechanically be solved . one problem is the almost unbelievable acceleration a spring is able to produce upon being released. It can reach 330 m/s² and more which means that mechanically it is almost
impossible to construct a release-mechanism which is fast enough to get out of the way of the accelerating spring. Most of  the momentum
is eaten up by the inertia of the mechanism.

Anyway...yes I saw your double yo-yo despin. In my small flywheel I saw the ransfer of momentum more than  3 times ( back and forth between
big and small mass) It must do so because the small mass stays connected.

Mike

#### Delburt Phend

• Full Member
• Posts: 201
##### Re: re: energy producing experiments
« Reply #392 on: October 15, 2022, 03:37:20 AM »
It has been a long time since I investigated springs; but you sight the problems. I think another drawback was the need to increase the time over which the force acts; and springs are not a uniform force field. Half why down a spring you have half the force; half why down an Atwood’s you still have the same force exerted by the extra mass.

Good work on your triple stops.

#### sm0ky2

• Hero Member
• Posts: 3721
##### Re: re: energy producing experiments
« Reply #393 on: October 24, 2022, 11:58:16 PM »

A momentum transfer does however occur in a cylinder and spheres. The momentum of the large mass transfers to the small mass.  Did you see this one? https://www.youtube.com/watch?v=YaUmzekdxTQ  It transfers the motion twice.

This was a very important experiment, that not only demonstrates the conservation of momentum, but when performed on board Space Lab, helped NASA solve the problem of what happens when a tethered object can affect the motion of a space craft when the two have different relative velocities.

#### sm0ky2

• Hero Member
• Posts: 3721
##### Re: re: energy producing experiments
« Reply #394 on: October 25, 2022, 12:01:06 AM »
Heres an experiment:

An electrically excited laser, with no directional guide such that it radiates spherically.
Then completely enclosed in a thermal housing, to allow the direct conversion of atomic excitation into heat.

Is this more efficient than the carnot cycle for say, heating our homes?

#### Kator01

• Hero Member
• Posts: 886
##### Re: re: energy producing experiments
« Reply #395 on: November 17, 2022, 12:44:00 AM »
...wait until after the Gozilla-scene:....

momentum-transfer in plain sight