A Promethean Thought Experiment

[IggyZ]

@ george1

It's like this

There are commonly two power to weight ratio considerations that are looked at
in this arena (energy and efficiency wise).

1. Energy or power density, as in how much do the electric batteries in an electric
vehicle weigh compared to the number of amp or watt hours they can deliver on
a single charge.  The power source is on board.

2. One seeks the rapid acceleration of, for example a fast automobile. In the U.S.
this is typically judged by the car's ability to accelerate from 0 to 60 miles per hour in
some number of seconds. This is another kind of "efficiency".

The best of conventionally available electric generators are > 98% efficient at
converting mechanical power into electrical power.

  All in all...

This is why I have said that your usage of terms does not make sense / is like
comparing apples to oranges.  i.e. "power-to-weight ratio" in the context in which
you use the phrase.


          P.S.
  It remains that you have not responded to a single one of my questions and
that your topic is just more click bait.

I think I now understand why you are confused by my use of the power-to-weight ratio term. Thanks. I am sorry it caused confusion. It is probably  smarter to discuss this in terms of electricity consumption vs. electricity generation

You say:"
The best of conventionally available electric generators are > 98% efficient at converting mechanical power into electrical power". I guess it is fair to say the power flow diagram is correct.

[IggyZ]

or

Will you please ...

state simply, the basic premise of your "Promethean thought experiment" ?

Question...

Does a flat ended, rotating cylindrical disk with a total mass of 1 kg, while its outer
edge is rotating at a speed of 1 meter per second..
                        posses
as much kinetic energy as does that same object when not rotating, but which is
instead, moving in a straight line of travel, at a speed of 1 meter per second ?

Answer is no.  When moving in a straight line all of the mass is moving at 1 meter per
second.  When rotating, the mass of the object is distributed as moving at speeds of
from zero meters per second to 1 meter per second.
                          From its center (0m/s) to its edge (1m/s).

Is it not ?

I do not know if you are correct since I can't do the math to prove whether you are right or not. Also the disk is attached to an axis. If it would break away from its axis its kinetic energy might be the same as that of the mass moving in a straight line. Their mass is the same so I guess it depends on how much energy was needed to spin the disk and how much energy was needed to move the mass in a straight line.

[Floor]

Cool. I think of your idea / thought experiment as really, not too shabby at all.

Welcome to Overunity.com.

When a subject is of interest to me, I find it usually is not to much effort to pick up
/ learn, a little more math when the need comes along.

I find this is easier when I have something I want to apply the math to.

Keep learning and Keep exploring.

  best wishes

[IggyZ]

Thank you Floor for your feedback and being willing to stick out your neck! Unfortunately this is rare. Best wishes to you.

I guess it is fair to say it is more than plausible the Prometheus Generator is capable of generating excess energy.

It is possible to drive a 140 tons rotor at a speed of ~ 45 kmh (measured at its edge) using 1600 KW of electricity and most of the mechanical input power is converted to electricity (please see attached picture).

[Floor]

@Iggyz

I guess I'll stick my neck out here again.

Here is a 90 page text (part 1). It was written by a non expert for non experts.
It explains and gives definitions for some basic physics concepts.
It contains very little math, some simple math and also explains the math it does contain.

Some basics of the following.

energy
inertial frame of reference
speed
velocity
gravity
force
acceleration
the forces of acceleration
constant acceleration
acceleration by gravity
inertia
momentum
mass
weight
mass compared to weight
the newton of force
mechanical work
the joule of energy
aspect ratio
time
power

It is called "Magnets Motion and Measurement" PDF and is attached below.

I hope you will find it useful.

        best wishes
             floor