Re: Work/Energy Theorem

["Donald E. Simanek" <dsimanek@eagle.lhup.edu>]

On Tue, 11 Mar 1997, John Mallinckrodt wrote:

> On Tue, 11 Mar 1997, Jim Green wrote:
>
> > 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.
>
> John

Is there *any* frame you could choose in which there would be *no* work
done in these two examples?

	-- Donald

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Dr. Donald E. Simanek                            Office: 717-893-2079
Prof. of Physics                    Internet: dsimanek@eagle.lhup.edu
Lock Haven University, Lock Haven, PA. 17745          CIS: 73147,2166 
Home page: http://www.lhup.edu/~dsimanek            FAX: 717-893-2047
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