Power from repelling magnets

[sm0ky2]

What have you learned since your scales arrived?

[ayeaye]

What have you learned since your scales arrived?

The force is not measurable with these scales, in spite these are a very sensitive scales. There is nothing i can do, i cannot see any movement on the scale at all. I feel with fingers, there is force, i can say when it's weaker or stronger, there clearly is force, but too weak to be measured with these scales.

I don't know what to do, a huge magnet and a big nut, then the force is most likely measurable with such scales. But i don't have such huge magnet.

One thing, the hook of these scales is made of a non-magnetic material. I don't know what it is, but it is not attracted by magnet. I thought that i have to make an additional hook from a copper wire or something, but no need, one can put the hook directly inside that nut.

I found that a matchbox put there with the corner, can be used to show the angular position. Not the best, and sure a better solution can be found, but will do.

Another thing that i thought, maybe to put an additional paper disc inside the scales, near the hook side, that will show the reading. That way it is easier to capture the experiment by camera, only the end of the scales have to be in the visible area. And it can be done with the precision that the measurements can be seen, without moving the camera. Then just make a video of moving the disk like millimeter or two millimeters at a time, stopping each time. This video will show all measurements, nothing more would be necessary.

One slight problem with these scales. When they are horizontal, the red plastic disc (around the hook rod that shows the reading) goes slightly against the tube. Very slightly, and it likely doesn't change the measurements, even when small. But it shouldn't be, for it to be perfect, the disc should be either made smaller, or replaced by a smaller disc.

How it is feasible to do the experiment, this is all important.

[norman6538]

Ayeaye make your own scales. I like variable levers which can be very sensitive. Take a  dowel and put a hole through it for an axle then drill a hold in the side so that you can insert an arm  like a popsicle stick or wooden coffee stirrer (which can also be glued to the end of the dowel). then you can make several holes in the arm for various leverages. And you can hang various weights off those holes. Then mount the axle in a pivot and wrap a string around the dowel and attach it to the device being measured or a weight and attach the opposite to the other end. I have a photo but can't post it now. ask for the photo if you don't understand how to use this sensitive device. What happens is the leverage changes as the arm rotates and there is a balance point where it will just sit there. or either extreme will dominate. With your super brain you should have no questions nor need a photo.

Happy and Healthy New Year everybody,
Norman - not so healthy

[ayeaye]

Ayeaye make your own scales.

I know it is possible to make one's own scales, but it's too difficult, for so small forces.

It is important to measure these forces, one can make devices no matter how many, where one can feel the forces by one's hand, but what does it give? Who doubt in them, remain skeptical, when there is no measurement. A measurement showing gain of energy even when disregarding friction, is thus so important.

Again, in your Lafonte scissors both pairs of magnets attract, did i understand correctly? Assuming that it is so.

If so, it shows the same effect. Separating two magnets when moving by axis takes less energy, than approaching from the side gives. So what is necessary is to measure energy in both cases, maybe it's possible, and maybe the forces there are strong enough to be measurable. What is necessary for such measurements, a small linear bench?

Happy New Year you too, and health.

Below is a better photo of my spring scales, made with a digital camera. Better than i could make with the webcam, in the lighting conditions. What is important is that only having the scales enables me to post the image of it here, as all the images available are in a way or another copyrighted, and cannot be posted here. So this enables you to see a photo of real spring scales, with a 1 Newton range.

[sm0ky2]

Have you measured your force?