Re: But the Alternator Runs Anyway

[Bernard Cleyet <anngeorg@PACBELL.NET>]

Yeah!

That like saying a labourer eats the same amt. as a Prof. (without either's
mass changing)

bc  who lost weight and ate 2X when he finished grad school and carpentered.


Bob Sciamanda wrote:

> If you have a small hand-cranked generator, connect it to a light bulb
> through a switch.  You will note that the generator is harder to turn when
> the light is switched on!
>
> Bob Sciamanda (W3NLV)
> Physics, Edinboro Univ of PA (em)
> trebor@velocity.net
> http://www.velocity.net/~trebor
> ----- Original Message -----
> From: "Abul Kalam" <cd_abul@CCCS.CCCOES.EDU>
> To: <PHYS-L@lists.nau.edu>
> Sent: Friday, February 22, 2002 2:05 PM
> Subject: But the Alternator Runs Anyway
>
> > In one of the conceptual physics textbooks, the question asked was
> > whether there was a greater consumption of gas in a car while the engine
> > was running if the car lights were left on. As obvious as the answer
> > seemed, I responded, yes it would. The energy had to come from
> > somewhere. But one of my students reminded me that the alternator ran
> > all the same whether the lights were on or not; so the overall gas
> > consumption stayed the same; in his opinion, it did not make any
> > difference. What do you think?
> > - Abby