Article View: sci.electronics
Article #20903Re: Re: MOTOR puzzle
From: Marc T. Kaufman
Date: Sat, 18 Mar 1989 05:40
Date: Sat, 18 Mar 1989 05:40
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In article <9915@bloom-beacon.MIT.EDU> yphotons@athena.mit.edu writes: >What would be the best strategy in solving the following problem: >Given 2 small rectangular magnets, approx 5 feet of wire, 2 thumb >tacks, 2 paper clips, and a small block of wood (about 4"X2"x.5") How >would one built a motor so that it can at least reach 2600 rpm. Only >these items can used, the use of glue, tape, etc will disqualify you. >NOTE only these items can used in thethe motor but you can use a drill >to make holes or a saw to cut the wood in building the motor etc. Get the Wolf or Bear Cub Scout handbook from ca. 1950. There was a lovely motor project using just those parts... Maybe you can earn your gold arrow point for it. BTW: Tape is useful to hold the wire that becomes the commutator. I guess that disqualifies me. Marc Kaufman (kaufman@polya.stanford.edu)
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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!husc6!mailrus!tut.cis.ohio-state.edu!ucbvax!decwrl!labrea!polya!kaufman From: kaufman@polya.Stanford.EDU (Marc T. Kaufman) Newsgroups: sci.electronics,comp.periphs Subject: Re: Re: MOTOR puzzle Message-ID: <7846@polya.Stanford.EDU> Date: 18 Mar 89 05:40:57 GMT References: <18167@gatech.edu> <842@sering.cwi.nl> <9915@bloom-beacon.MIT.EDU> Sender: Marc T. Kaufman <kaufman@polya.Stanford.EDU> Reply-To: kaufman@polya.Stanford.EDU (Marc T. Kaufman) Followup-To: sci.electronics Organization: Stanford University Lines: 18