>Hi Brett,
>
>     You are recording both the position and the time of relative 
> movements of the mass. From this you can infer the lateral acceleration 
> and velocity of the frame of reference, if you know that the mass is not 
> being accelerated.
>
>     Regards,
>
>     Chris Chapman

Chris,

Thanks for your comment, that's exactly what I was trying to demonstrate.

On the one hand, there is the derivative relationship between ground 
displacement, velocity and acceleration and on the other, the practical 
problem of constructing a device to measure them.  My 'experiment' was an 
attempt to untangle the two issues.

Regards,

Hi Brett,

 

    You are recording both the position and the time of
relative movements of the mass. From this you can infer the lateral
acceleration and velocity of the frame of reference, if you know that the
mass is not being accelerated.

 

    Regards,

 

    Chris Chapman


Chris,


Thanks for your comment, that's exactly what I was trying to
demonstrate.  


On the one hand, there is the derivative relationship between ground
displacement, velocity and acceleration and on the other, the practical
problem of constructing a device to measure them.  My 'experiment'
was an attempt to untangle the two issues.


Regards,

Brett