F = (DW - UW) / 2

[Don]

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.

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