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If I apply a force to an object with an electric solenoid actuator,
switching it off removes the force that it applies, does it not? I stop
that force with a switch.
If I apply a force with a screw-jack, then that force is not controllable
or 'stoppable' but may instead be permanent in this context.
On 1/23/2018 4:30 PM, Todd Pedlar wrote:
You've illustrated perfectly by such a concept as an "unstoppable force"_______________________________________________
On Tue, Jan 23, 2018 at 4:26 PM, brian whatcott <firstname.lastname@example.org>
It seems that there is a presumption that a permanent [cannot be stopped']
force necessarily causes movement. It does not.
On the other hand, a force which may be switched on or off may cause
motion. Or not!
On 1/23/2018 1:44 PM, Todd Pedlar wrote:
That's the problem with a lot of the language of such questions - the
phrase "that cannot be stopped" is meaningless. I just don't know what
those words add to the context of any particular problem.
On Tue, Jan 23, 2018 at 1:42 PM, Philip Keller <
What is a force that "cannot be stopped"? I have no idea what that
means in this context. Can anyone give me a definition and maybe an
example of a force that cannot be stopped and another example of a
that can in fact "be stopped"?
On Tue, Jan 23, 2018 at 2:27 PM, Folkerts, Timothy J <
Concrete example: a 10 newton force which cannot be stopped, bears
directly on a 1000 kg marble block anchored in the substrate rock. The
block cannot be moved.
The 10^3 kg block anchored to the 6x10^24 kg earth accelerates at
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