Tom, Don't forget to save a few squares !
Bill....WB6BNQ Tom Van Baak wrote: > This is an interesting T&F problem, actually. It depends what > you mean by "it". If "it goes" means the paper itself -- if you > pull at a constant linear rate then it goes neither slower nor > faster. It's constant and then suddenly ends, that's all. > > If "it goes" means the rotation (frequency) of the roll -- if you > pull the paper at a constant linear rate then, yes, a predictable > drift in frequency occurs as the radius of the roll decreases. > > For an interesting mental exercise (perhaps while you're sitting > down near said roll of TP) see if the frequency drift is linear or > log or exponential. For extra credit, when the roll is slightly bent > (as often happens) rather than perfectly circular see what effect > that modulation has on the short-term ADEV of the frequency. > > Alternatively, if you unroll the TP by attaching a stone to the end > and letting it drop over a cliff then you have a really interesting > physics problem considering the acceleration of gravity, varying > mass, inertia, and radius of the roll, nonlinear friction in both air > and roller, etc. > > /tvb > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
