Shifted Levers

Author Topic: Shifted Levers (Read 5327 times)

Valeriy	Shifted Levers « on: 2015-02-28, 19:02:22 »
Jr. Member Posts: 87	Shifted Levers video: https://www.youtube.com/watch?v=8TniRMwL2Vg The combination of two triple levers (black) with one shifted lower, creates a significant overbalancing effect on the left. The model was built to illustrate the original idea that is taken from: https://www.youtube.com/watch?v=srBbJSzaqOg Shifted Levers YT.jpg (95.42 kB, 666x474 - viewed 959 times.)

BEP

Re: Shifted Levers « Reply #1 on: 2015-03-03, 17:08:40 »

Hero Member

Posts: 2205

It just looks overbalanced.

The weight of each bar/flag is applied equally to the arm it is attached to.

Since each bar/flag weighs the same (assumed) the same weight is applied at all three points.

One could argue that the increased distance from the mechanism center to an extended flag creates a higher leverage on the whole mechanism but it doesn't. The effect of higher leverage is defeated by the combined joints.

Centraflow

Re: Shifted Levers « Reply #2 on: 2015-03-03, 18:59:17 »

Group: Experimentalist
Hero Member

Posts: 3966

It is a clever optical illusion. The real center of rotation of the "flags" is not where you think it is

How many flags are going uphill to going down hill? it can't work, there is no gain in weight on one side, only a loss

Run the vid in slow motion and look at the flags only.

The motion is run by an external means, not the flags.

regards

Mike

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