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-----Original Message-----on
From: phys-l-bounces@carnot.physics.buffalo.edu [mailto:phys-l-
bounces@carnot.physics.buffalo.edu] On Behalf Of Steve Highland
Sent: Wednesday, February 20, 2008 10:31 AM
To: Forum for Physics Educators
Subject: Re: [Phys-l] non-conservative --> non-grady ???
Your capacitor example would work the same even if you left the field
forzero.
the entire time since the electric field outside the capacitor is
Has
I'm not quite sure what the issue is that you are trying to address.
someone claimed that conservative forces cannot do work? Of coursethey
can. Gravity pulling a falling ball downward does work on the ball.If
youit
define the ball alone to be your system, then its energy increases as
falls. The ball by itself isn't a conservative system.