Impressive explanation! I love how you created the apparatus in a simple way and yet, very effective to demonstrate the phenomena. Impressive!

Best example on the internet! 👍🤘👏

Best explanation so far in youtube. I was so confused before watching the video. Thanks alot ❤

That's the best demonstration of balance I have seen very clear and easy to understand. many thanks.

Nice demonstrations pieces, I haven't tried them but your video makes it clear enough that I can imagine holding them in my hands and feeling the results. Well done. In the future if you think one of videos enhances a comment that you are making about something that I've posted, include the URL so that others may more easily find it, always interested in other's opinions

very educative. Thank you great simulations

Very clear explanation of the subject. Well done

Excellent video, the visuals allow for intuitive and rapid understanding. Thanks!

I thank you so much for this video. It has greatly helped me understand this concept!

Nice explanation. Now to my problem: my washing machine goes out of balance on the low speed spin (at the end of the wash and rinse cycles), but not on the high speed spin (occurs twice on the spin cycle). I observe that as the machine spins up the high speed spin (spin cycle), there is an intermediate speed where the machine starts to go out of balance, but the rate of increase in angular velocity fairly rapidly damps that out. On the low speed spin (wash and rinse cycles), the angular velocity seems to terminate right at the point where the out-of-balance condition is at a maximum. It seems to me that, under the imbalance condition, the machine moves from side-to-side rather than at random, and I suspect that this is because the base is narrower in the side-to-side direction than it is in the front-to-back direction. Thus, I believe that the oscillation of the spinning unbalanced wash basket hits a vibrational frequency of the washing machine base causing the machine to make unpleasant noises and to walk around. The machine is designed with a "balance" ring at the top of the clothes basket that is filled with fluid. I presume that this fluid-filled ring is supposed to dynamically counter any oscillations that result from an imbalanced load in the basket. Inspection of the basket shows that there is fluid in the balance ring and there does not appear to be any damage to the ring that would cause a leak in the balance ring. I am having a hard time visualizing how a relatively small fluid-filled ring at the top of the wash basket can adequately stabilize an unbalanced load of wet clothing in the bottom of the basket. Alas, for my model, the balance ring cannot be replaced and the cost of a new basket is nearly the same as the price of a new washer. I should point out that the wash basket, the outer container and the motor and gearing are supported on suspension rods with springs to damp out vibrations. I am thinking that, in addition to springs, the suspension rods should include dashpots to overdamp the motions. Any thoughts about this practical application of the points made in your video? BTW, your video was the best I have seen about the subject of instability of rotating systems! Thanks.

Thank you! Awesome presentation.

Nice explanation sir.

Very nice demo. Thanks a lot.

Great....love it Thanks

Excellent .... these demo pieces clears the concept effectively. thank you.make more video on balancing.

amazingly explained ! Thankyou

The other thing to notice is the omega squared term. Things get bad fast at high speeds. You equation would imply that doubling the speed quadruples the magnitude of the vibration. Or going from 100 to 1000 rpm would increase the force 100x!

Good info, thanks for explaining this clearly and concisely.

This helped me, thank you.

great video. concisely explained

Great video..... Thanks a lot... 🙏🙏🙏🙏🙏

nice demonstration. I didn’t know that was called dynamic balance I thought it’s just a way to balance the weel better, but it makes sense since it only occurs when you rotate it. I have a flywheel and it has a counter weight to balance the crankshaft and that means it can’t be balanced dynamically but that’s maybe one reason why the redline is 5500rpm .

great video.

you taught me something today, thanks

Thanks a lot sir ✨It helped me a lot

Great explanation.....

Thanks from Turkey

Hello Antalz, I enjoyed your video a lot, did you create the animation?

Thank you very much

GRAZIE

Well done ... Thanks.

Really awesome, sir, is there any video in which u have showed dynamic balancing also?

Looks like dynamic is just 2 plane balance, and that if the wheel rotated on a point instead of an axis you could determine dynamic imbalance using static methods?

Great video that really explains it. If one has dynamic imbalance how does one know the weight and distance from the center one needs to place it in order to counteract the dynamic imbalance?

How grooved pulley having keyway balancing done in balancing machine?

Imbalance is in your checkbook, unbalance is in your rotor.

Again, thank you very much. What is couple imbalance?

I've achieve static balance on my tires, but I'm experiencing Dynamic imbalance, and it's driving me nuts!

I don't need to 3D print these. I don't have a drill press. I've been bugged by these problems for decades. But not enough to go get a drill press.