I must be a mathmatician. I understand how I should solve the problem, and that there /is/ an answer. So now I'm no longer as interested in it as I was while reading it. Mostly I'm avoiding it because I realize it would take me a good bit of time I can't use right now. If I were to solve it, I'd be particularily interested in seeing if there's a unique or unusual relationship between H, M, and S. If not then you have to include a lot of variables in the end equation, which could be quite cumbersome. Can it be simplified if we assume M = 2H, for instance. Let me know... :-) What I'm more interested in now is - what could such a mechanism possibly have use as? -Adam On 9/27/06, Rolf wrote: > In the OT spirit, and just for fun (and to waste away some time...), > here's a little challenge that will exercise your mind. > > Pretend there is a "Grandfather" clock (standard clock face, no second > hand). There is a piece of string tied from the end of the hour hand to > the end of the minute hand. The length of this string is greater than > the sum of the hour and minute hand lengths. Suspended from this > string, on a pulley, is a weight. This weight can move freely along the > string and will need to as the time changes on the clock face. > > Given that: > the length of the String is 's' (not counting the string required to tie > the actual knots) > the length of the hour hand is 'h' > the length of the minute hand is 'm' > s >= h + m > the co-ordinate system will be an x-y system in the same units as the > various lengths above, with the origin centered on the center of the > clock face. > the pulley that the weight hangs from is assumed to have *no* diameter. > > what will be the position (x,y) of the *pulley* at time 't' on the clock. > > Rolf. > > P.S. No prize, but I am scurrying off to remember how to solve this > one..... ;-) > > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist