Inertia, was "Grand Touch"

[William R. Monroe]

Hi Cy,

Haven't read Stephen's paper yet.  Will tonight, then, more questions, I'm
sure.  However, just my intuitive take with your example.

Consider the other option, and how they compare.  I do not dispute that
installing weights at the end of the car (key) increase inertia.  I only
question whether inertia would be different in the case of hanging a small
weight at the end of the car (key) vs. installing slightly more mass near
the pivot point.  Since the pianist feels/activates the key somewhere near
the end of the stick (for arguments sake), it would seem that the FW of the
key would be the point at which we take a mass reading to compute inertia in
a played key, since some of that mass (regardless of placement) is supported
at the balance rail.

Just my musings.  God I love this kind of stuff!  Awful fun to learn from
you all.

William R. Monroe

> Cars on a road course have to quickly change direction.  Viewed from
above,
> they pivot around their centers as they turn left and right.  When the
> five-mile-an-hour bumper law was passed around 1976, it greatly reduced
the
> cornering ability of many cars, especially the MG.  Hanging big weights at
> the extreme ends of the car, it made it much harder to change direction.
> Think of the spinning ice skater with arms in vs. arms out.  I believe
it's
> called "polar moment of inertia", and I'll bet Dr. Birkett has it all
> spelled out in his PDF.
>
> --Cy--
> shusterpiano.com