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If a stick
of dynamite at rest blows and stuff flies all about, are we as a group
comfortable saying that no work was done? ... Or a system of two particles
connected by a compressed spring is freed??? No work???
These are not well defined questions. You need to specify the system on
which the work is to be calculated, the type of work you want to
calculate, and, for frame-dependent works, the reference frame.
Is there *any* frame you could choose in which there would be *no* work
done in these two examples?