Stable Rollers - Numberphile
Tadashi Tokieda is back. This time talking about stability, instability and train wheels. More Tadashi videos: http://bit.ly/tadashi_vids Numberphile is supported by the Mathematical Sciences...
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I made two bizzare objects, they were both made from two cups of, uh, esspresso one of them glued like this and the other one glued like this so this one I can balance very carefully like this on a support whereas the other one I have really no chance of balancing it's very unstable so you might have the impression that this one is the stable one and this one is the unstable one because this bulges out and and hugs whatever supported standing on with this is well, going to tip. Let's do the dynamic version of the experiment so this is an inclined plane and we'll try to let this roll down the slope. here we go. And it rolls down and rolls all the way down very happily. next, this one. let's try to make it roll down the slope and whe...
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I made two bizzare objects, they were both made from two cups of, uh, esspresso one of them glued like this and the other one glued like this so this one I can balance very carefully like this on a support whereas the other one I have really no chance of balancing it's very unstable so you might have the impression that this one is the stable one and this one is the unstable one because this bulges out and and hugs whatever supported standing on with this is well, going to tip. Let's do the dynamic version of the experiment so this is an inclined plane and we'll try to let this roll down the slope. here we go. And it rolls down and rolls all the way down very happily. next, this one. let's try to make it roll down the slope and whe...
