Sarah, Mark, Don, Jim. Sarah Fox wrote: > > Hi all, > > Ric, I expect you want me to weigh in as well! ;-) > > > Now we have all sorts of new goodies to argue about! > > No argument here! What Mark and Don said! Hi Sarah, I kinda figured at this point you three were in agreement :) But here's a couple examples of stuff pianotechs have said that I'd like the same kind of comment on as you gave in my last direct question. In a fairly well known book about pianos there is a claim made for justifing the use of very (extremly) light hammers. The basic argument used is that since F = ma, and since lowering mass while applying the same force (assume from the finger) the acceleration of the hammer will increase proportionally. Seems to me this argument is full of holes. But assume for a second that the given two hammers, one 3 grams lighter then the other were accelerating at different rates such that at the exact moment of impact F would be the same for the two. Is the WORK done by the hammer the same ? How would you use WORK, MOMENTUM, and/or KINETIC ENERGY to describe the impact of the hammer and string ? Another thing I've heard from time to time is the claim that the only thing the hammer brings to the string (aside from its elasticity) is its MOMEMTUM. Would you agree ? Cheers RicB
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