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// the extra bit of energy is dumped into it to keep it yoyoing. // |
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With great aplomb. Look, I was too lazy (just off to bed) to calculate string length when I posted it, what makes you think I'm gonna do stuff with momentum ? The fact that you can make a regular yoyo wind itself up faster than it unwound means it's possible. |
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The point is "yoyo clock". |
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But can you make it walk the dog? |
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This would be brilliant. [+] |
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Well, yes; not terribly accurate of course: the timing gets bollixed up a bit since the string rewinds itself a bit differently each time, though it should average out, more or less. |
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The jerk at the bottom releases a pawl, which (business as usual) allows the sprung second-hand gear to advance, but also trips a mechanism to yank the string up a bit (subsequently the string is lowered back down, at a rate not exceeding the take-up on the dowel, during the yo-yo ascent). The slight bit of rotational momentum lost at that moment is more than made up for by the vertical momentum added (the overage balancing out the various frictions). |
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I'm imagining, since energy isn't a problem here, a robotic arm. The ticking is shown by standard play with some tricks randomly thrown in for boredom control. If asked the time,the arm displays time by the angle of throw. |
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Like [wjt]'s suggestion. Have it simultaneously chewing gum
with a simulated baseball cap on some obtuse angle. |
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// The jerk at the bottom // |
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A Democratic voter, presumably
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well now I want to see robots do yo-yo tricks |
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