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On Tuesday, December 10, 2002, Savinainen Antti wrote:
The approach I have tried out
is to start treating forces arising from *interactions*. Force
is defined to be a measure of strength of interaction between
two objects.
My approach is different; the concept of force is introduced
as a "push or pull of any kind" that can be measured or
experienced, at least in principle.
Later we talk about real and fictitious forces; both kinds
are measurable with force-meters, at least in principle.