Re: Re[8]: [ATM] Use of bearings in (static) mirror cells

["matt" <electro_optic@bellsouth.net>]

I feel this is a good time to stop posting in this thread due to the risk of
becoming _in violent agreement_ as others have said ;-)

However, these posts are archived and some poor soul might come across
Richard's "definition of friction = If you pull it faster it takes more
effort" .

First of all, the quoted statement is an insult to the logical meaning of
the term definition in itself.

Secondly , it doesn't seem that Richard is using words in a careful or
scientific manner. He equates "effort" with "force" .

Without opening another can of worms by asking what is the definition of
"effort" for Richard, it must be pointed out that regardless of our
agreement or disagreement, the fact whether it might (or not) take more
"effort" to slide a "heavy" weight faster is _not_ a definition of friction,
and is _not_ proof that solid sliding friction is dependent on relative
velocity.
The mere juxtaposition of these terms is just sloppy language .

I do not wish to prolong this absurd thread, due to the fact that it was
actually hijacked from its initial interesting topic.

I rest my case.

thanks,
matt

-----Original Message-----
From: Richard <cnc@cncservo.co.uk>
To: matt <electro_optic@bellsouth.net>
Date: Wednesday, April 20, 2005 1:42 PM
Subject: Re[8]: [ATM] Use of bearings in (static) mirror cells


>Hi matt,
>
>Wednesday, April 20, 2005, 6:21:22 PM, you wrote:
>
>m> what exactly has running or pulling a heavy weight have to do with the
>m> _definition_ of coefficient of friction ?
>
>Everything. The definition of friction. If you pull it faster it
>takes more effort. Do you agree?. If you do agree, you agree
>that frictional force IS proportional to velocity.
>
>m> I would appreciate an answer that
>m> refers to physics rather than to one's own person or subjective
attempts,
>m> feelings etc.
>
>Any junior mechanics text book.
>
>Static Friction (stiction) The force required to disturb an
>object from rest.
>
>Sliding Friction. The slope of the graph of Force against
>Velocity.
>
>--
>
>Best regards,
> Richard
>
>
>
>

_______________________________________________
ATM mailing list http://www.atmlist.net/