Re: RE: Re: RE: Re: RE: Re: Petential Energy doing Work

On 7/1/2024 11:50 AM, Tom Kunich wrote:

On Sun Jun 30 20:16:25 2024 Frank Krygowski  wrote:

On 6/30/2024 7:14 PM, Tom Kunich wrote:

  Frank claims to have taught mechanical engineering and he doesm't even know how to quantify potential energy which is a MAJOR component of engineering. He says tipping your bike over according to me would cause it to shoot out from under you!

>
No, Tom, you've got that precisely backwards. I said tipping a bike into
a turn would not, as you claim, generate an increase in kinetic energy.
Nor would there be an increase in kinetic energy precisely canceled by
tire friction.
>
I'm ignoring the rest of your verbose rant. Damn, you spew so much misery!
>

Sorry Krygowski, you showed that you do not believe in addition or subtraction of potential energy and you supposedly were and engineer.

Tom, I used and taught conservation of energy principles many times. I had students do experiments on those principles. You're simply misapplying the concept.

I NEVER said that the addition of potential energy was "exactly" canceled by tire friction but that is the way your mind works - ...

I don't have time to dig out your precise words; but you did claim an increase in kinetic energy when a cyclist leans in a turn. You also said something about tire friction scrubbing away some of that energy, apparently to explain why a cyclists doesn't see an increase in speed. Perhaps you didn't use the word "exactly"?

You clearly stated that if you stand in a parking lot and tip your bike over that it would shoot out from under you ...

Nope, I said essentially the opposite. I suggested you try standing tall during a track stand, for maximum potential energy, then dropping to the saddle. I noted that the reduction in PE does _not_ generate an increase in Kinetic Energy in that case. There's no mechanism for it to do so.
Sorry you found that confusing; but I'm not surprised.
--
- Frank Krygowski