Xref: utzoo sci.physics:6635 sci.electronics:5710
Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!bbn!aoa!carl
From: carl@aoa.UUCP (Carl Witthoft)
Newsgroups: sci.physics,sci.electronics
Subject: Re: PUZZLE
Message-ID: <746@aoa.UUCP>
Date: 30 Mar 89 13:11:37 GMT
References: <24615@pbhya.PacBell.COM> <9916@bloom-beacon.MIT.EDU>
Reply-To: carl@aoa.UUCP (Carl Witthoft)
Organization: Adaptive Optics Assoc., Cambridge, Mass. USA
Lines: 23

In article <9916@bloom-beacon.MIT.EDU> yphotons@athena.mit.edu writes:
>Have any ideas??????
>
>A recent MIT physics (freshman) extra-credit problem: Given 2 small
>rectangular magnets, 2 paper clips, 2 thumb tacks, approx. 5 feet of
>wire, a small block of wood (4"X2"X.5") build a DC motor running of 1
>1.5V that can at least reach 2600 rpm. The use of glue, tape, etc in
>the final product will disqualify you. Only the above mentioned items
>can be in the final product. The use of a drill, saw, etc.  in
>building the motor is ok.

This is clearly a blatant attempt to get net physics gurus to help
this student cheat in class :=).  I propose :=) we only allow 
responses from other students in the same class.


-- 

Alix' Dad ( Carl Witthoft @ Adaptive Optics Associates)
" Axis-navigo, ergo sum."
{harvard,ima}!bbn!aoa!carl
54 CambridgePark Drive, Cambridge,MA 02140 617-864-0201
"disclaimer? I'm not a doctor, but I do have a Master's Degree in Science!"