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Re: [Phys-l] teaching energy





|
| Wouldn't it be more accurate to say that quantifying the
| energy contained in
| the object is subject to your choice of frame? Choosing a
| frame doesn't
| require a system of objects necessarily. In the case you
| cite above, for
| example, it seems to me that the train itself is irrelevant,
| only the frame
| chosen is a determining factor. If that IS the case, then
| there is still
| nothing wrong with asserting that WHATEVER the quantity of
| kinetic energy
| calculated may be, it is STILL "contained" in the object. Yes? No?
|


That sounds like a reasonable rejoinder to Dan's and my complaint.