Re: Wrench Physics Question

From	Odd Bodkin <bodkinodd@gmail.com>
Newsgroups	sci.physics
Subject	Re: Wrench Physics Question
Date	2015-10-30 12:44 -0500
Organization	Aioe.org NNTP Server
Message-ID	<n10a9m$cnj$1@speranza.aioe.org> (permalink)
References	<pan.2015.10.30.06.47.41@localhost.localdomain> <n0vq5l$6rt$1@speranza.aioe.org> <pan.2015.10.30.17.24.31@localhost.localdomain>

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On 10/30/2015 12:23 PM, Fabian Russell wrote:
> On Fri, 30 Oct 2015 08:09:11 -0500, Odd Bodkin wrote:
>
>>
>> I always thought it was to increase range of motion. Nuts are often in
>> confined spaces and the angle of attack for attaching the wrench may be
>> limited.
>>
>
> Yes, that certainly is true.
>
> But, under unconfined conditions, there could be a preferred direction
> of rotation.

Yes, indeed. If I'm trying to tighten it, then I want to turn it 
clockwise. If I want to loosen it, then I want to turn it a different way.

Wrench heads are angled at 15 degrees for a specific reason, which you 
can relate to the fact that most bolt heads and nuts have six sides.

I think you are imagining a solution looking for a problem. I'm pretty 
sure the reason I gave for the design is right and anything else is an 
unintended consequence. I'll bet this is not hard to find with a quick 
Google search.

>
> Take a paper and pencil to sketch a force diagram to verify
> the following:
>
> If there were no head angle (0 degrees), all the force applied to the
> handle would produce torque about the center of the bolt or nut.
>
> With a certain head angle, some of the applied force does not produce
> torque but rather produces an acceleration of the bolt or nut.  Of course
> the bolt or nut is fixed and cannot move, but if the wrench should slip
> off then the resulting motion of the wrench could cause problems,
> especially if a lot of force is applied to the handle (stubborn bolt).
>
> So, in light of this, which direction of rotation would be preferable?
>
> Note that my original posting contained TWO questions: the reason for
> the design and any rotation preference.  The two issues need not be related.
>


-- 
Odd Bodkin --- maker of fine toys, tools, tables

Thread

Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-10-30 06:47 +0000
  Re: Wrench Physics Question Odd Bodkin <bodkinodd@gmail.com> - 2015-10-30 08:09 -0500
    Re: Wrench Physics Question Sam Wormley <swormley1@gmail.com> - 2015-10-30 08:50 -0500
      Re: Wrench Physics Question jimp@specsol.spam.sux.com - 2015-10-30 17:10 +0000
        Re: Wrench Physics Question gilber34 <fafa@invalid.com> - 2015-10-30 20:54 -0500
        Re: Wrench Physics Question Sam Wormley <swormley1@gmail.com> - 2015-10-30 21:35 -0500
    Re: Wrench Physics Question jimp@specsol.spam.sux.com - 2015-10-30 17:08 +0000
    Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-10-30 17:23 +0000
      Re: Wrench Physics Question Odd Bodkin <bodkinodd@gmail.com> - 2015-10-30 12:44 -0500
        Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-10-30 17:58 +0000
        Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-10-30 18:08 +0000
          Re: Wrench Physics Question Odd Bodkin <bodkinodd@gmail.com> - 2015-10-30 15:37 -0500
            Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-10-30 20:42 +0000
              Re: Wrench Physics Question Odd Bodkin <bodkinodd@gmail.com> - 2015-10-30 15:51 -0500
        Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-10-30 18:14 +0000
          Re: Wrench Physics Question Odd Bodkin <bodkinodd@gmail.com> - 2015-10-30 15:40 -0500
            Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-10-30 21:13 +0000
              Re: Wrench Physics Question Odd Bodkin <bodkinodd@gmail.com> - 2015-10-30 16:29 -0500
                Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-10-30 21:59 +0000
                Re: Wrench Physics Question Odd Bodkin <bodkinodd@gmail.com> - 2015-10-30 17:15 -0500
                Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-10-30 22:31 +0000
                Re: Wrench Physics Question Odd Bodkin <bodkinodd@gmail.com> - 2015-10-30 21:09 -0500
                Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-10-31 02:22 +0000
                Re: Wrench Physics Question xxein1@att.net - 2015-10-30 20:27 -0700
                Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-10-31 04:23 +0000
                Re: Wrench Physics Question xxein1@att.net - 2015-10-31 07:16 -0700
                Re: Wrench Physics Question Odd Bodkin <bodkinodd@gmail.com> - 2015-11-01 15:27 -0600
                Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-11-01 23:16 +0000
                Re: Wrench Physics Question Odd Bodkin <bodkinodd@gmail.com> - 2015-11-02 08:58 -0600
                Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-11-02 20:00 +0000
                Re: Wrench Physics Question Odd Bodkin <bodkinodd@gmail.com> - 2015-11-02 14:27 -0600
              Re: Wrench Physics Question jimp@specsol.spam.sux.com - 2015-10-30 21:33 +0000
                Re: Wrench Physics Question Sam Wormley <swormley1@gmail.com> - 2015-10-30 21:19 -0500
                Re: Wrench Physics Question jimp@specsol.spam.sux.com - 2015-10-31 02:58 +0000
  Re: Wrench Physics Question "nuny@bid.nes" <Alien8752@gmail.com> - 2015-10-30 12:41 -0700
    Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-10-30 19:56 +0000
      Re: Wrench Physics Question jimp@specsol.spam.sux.com - 2015-10-30 20:21 +0000
        Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-10-30 20:39 +0000
          Re: Wrench Physics Question jimp@specsol.spam.sux.com - 2015-10-30 21:13 +0000
      Re: Wrench Physics Question Tom P <werotizy@freent.dd> - 2015-10-31 22:40 +0100
    Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-10-30 20:25 +0000
      Re: Wrench Physics Question jimp@specsol.spam.sux.com - 2015-10-30 20:40 +0000
        Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-10-30 21:04 +0000
          Re: Wrench Physics Question Odd Bodkin <bodkinodd@gmail.com> - 2015-10-30 16:23 -0500
            Re: Wrench Physics Question noTthaTguY <abu.kuanysh05@gmail.com> - 2015-10-30 14:27 -0700
              Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-10-30 22:28 +0000
                Re: Wrench Physics Question Odd Bodkin <bodkinodd@gmail.com> - 2015-10-30 21:10 -0500
                Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-10-31 02:25 +0000
                Re: Wrench Physics Question xxein1@att.net - 2015-10-30 20:45 -0700
                Re: Wrench Physics Question dvus <dven1@adelphia.net> - 2015-11-01 07:53 -0500
                Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-11-02 01:09 +0000
                Re: Wrench Physics Question Odd Bodkin <bodkinodd@gmail.com> - 2015-11-02 09:19 -0600
                Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-11-02 19:43 +0000
                Re: Wrench Physics Question Odd Bodkin <bodkinodd@gmail.com> - 2015-11-02 14:16 -0600
            Re: Wrench Physics Question Mahipal <mahipal7638@gmail.com> - 2015-10-30 15:56 -0700
          Re: Wrench Physics Question jimp@specsol.spam.sux.com - 2015-10-30 21:38 +0000
      Re: Wrench Physics Question "nuny@bid.nes" <Alien8752@gmail.com> - 2015-11-01 22:27 -0800
  Re: Wrench Physics Question xxein1@att.net - 2015-10-30 17:55 -0700
    Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-10-31 01:33 +0000
      Re: Wrench Physics Question xxein1@att.net - 2015-10-30 20:34 -0700
    Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-10-31 02:05 +0000
      Re: Wrench Physics Question xxein1@att.net - 2015-10-30 20:37 -0700
  Re: Wrench Physics Question xxein1@att.net - 2015-10-30 18:00 -0700
  Re: Wrench Physics Question xxein1@att.net - 2015-10-30 18:03 -0700
    Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-10-31 01:24 +0000
  Re: Wrench Physics Question Lofty Goat <rlwatkins@gmail.com> - 2015-10-31 18:44 -0500
    Re: Wrench Physics Question Sam Wormley <swormley1@gmail.com> - 2015-10-31 19:35 -0500
    Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-11-01 01:33 +0000
      Re: Wrench Physics Question benj <none@gmail.com> - 2015-10-31 23:21 -0400
        Re: Wrench Physics Question "nuny@bid.nes" <Alien8752@gmail.com> - 2015-11-01 04:35 -0800
    Re: Wrench Physics Question Fabian Russell <root@localhost.localdomain> - 2015-11-01 23:01 +0000

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