Hi Bradley, Because there is friction both directions--down and up so to find the number you have to divide it by two as you have measured it twice. At 11:33 AM 5/22/2003 -0500, you wrote: >Why is Friction (F) found by subtracting Upweight (UW) from Downweight (DW), >then dividing by 2? Why do we divide by two? Is that to compensate for >action geometry? Why don't we just use DW - UW to find the friction? > >Bradley M. Snook >Graduate Student in Piano Technology (M.Mus) >Rice University, Shepherd School of Music > >_______________________________________________ >pianotech list info: https://www.moypiano.com/resources/#archives > > Regards, Don Rose, B.Mus., A.M.U.S., A.MUS., R.P.T. mailto:pianotuna@accesscomm.ca http://us.geocities.com/drpt1948/ 3004 Grant Rd. REGINA, SK S4S 5G7 306-352-3620 or 1-888-29t-uner
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