Keyweights and moment of inertia

[Jon Page]

Richard,
A playing technique which improved my playing was the approach to
creating dynamics. Getting away from 'how hard' one plays, to 'how
fast' one depresses the key. Volume controlled by speed of key decent
has given my playing more colour. I learned this from someone who
studied with Tobias Mattay/ey/ais (sp?).

How this relates to your post is unclear as it is too early in the morning
(mid coffee) but somewhere in there it has relevance.
I'll probably think of it later.

Jon Page
At 12:11 AM 10/10/98 -0500, you wrote:
>10 lb weight have. or a 2 lb weight dropped from say 6 inches? as compared
>with your fingers comming down fron the same  height? 
>	Primative is it may seem, such a device could provide an insight to
>"keyweights and moment of intertia".  The question here is what if any
>different force is required to move a key with three weights close  to the
>fulcrum as opposed to one weight nearer the end? 
>	Also to keep in mind is the reaction of the action assembly to push the
>key back up to starting position. It is the down weight of this (minus
>friction) that causes the key go back up.  Does the position of the key
>weights matter in this? 
>
>Richard Moody 
>
>ps If there are any physics majors on the list, is there a simple answer
>to "When does instantanous acceleration equal velocity?"  So why are we
>concerned with acceleration instead velocity at the last instance? Are you
>saying it doesn't take time for force to develop?  The more time a mass
>accelerates the more force it has. But how come this is per sec squared. 
>couldn't it be slower than that? 
>
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