Quote:
Originally Posted by jakobnev
FAMOUS LAST WORDS!!
Prepare to have your mind expanded: (or blown if it was inflated to its limits)
The cart moves 93cm when the string moves 43cm, the cart is 2.16 times as fast as the string, exclamation point, QED, more exclamation points.
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Thanks. I could see the video portion, but no audio.
Can you provide a transcript of what the presenter was saying?
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1) Did you notice that the pull-string shortens during the presentation.
2) The string is being wound around a spool within the 'cart'.
3) If there is a spring-powered clock-drive, or battery-powered- motor-spool within the 'cart', this power , added to the 'system', is what's responsible for the phenomena you are experiencing, as the string continuously winds itself onto the spool.
4) A parlor trick.
5) A visual distraction from the actual dynamics.