Re: example of alternate form of 1st law

[Jim Green <JMGreen@SISNA.COM>]

> This time I'll throw the block up in the air from the surface of a
> planet. The planet is stationary, extremely heavy and large, and
> isolated in deep space. (Add other simplifications if you think it's
> useful.)

No!

This is just another version of the ice skating  rink problem and leads to
the vacuous pseudowork concept.

Unless the planet is infinitely massive, it is not an inertial system -- it
DOES move.

Jim Green
mailto:JMGreen@sisna.com
http://users.sisna.com/jmgreen