Re: Some propellantless propulsion fun

"Spaceman" <spaceman@xxxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
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Greg Neill wrote:
"Spaceman" <spaceman@xxxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
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The Ghost In The Machine wrote:
All are doomed to failure absent ejection of part of
the mass.

Would you like to show me such with this example please
A 100 gram ball is shot from inside a 1000 gram box.
The box is 10 cubic yards long and of course
all vacuum around and inside.

10 cubic yards long? Cubic yards are a measure of volume,
not length.

Ya big deal,
You know what I meant.

I've learned to be very wary of trying to guess what you
'really' mean. It invariably turns out to not be what
one thinks it is.

But of course you always need to show your superiority
without just thinking about what was stated.
:)

The ball is shot using an acceleration rate of 1 meter per
second/second.

For how much time is the ball accelerated? (This is
necessary to determine how fast the ball will be moving
when it strikes the far wall).

You should be able to find that out.

Not unless you specify it. It could, for example,
accelerate for only half the trip across the container.
Or it could accelerate for the whole trip. You need to
be precise in order to get precise answers.

There is only 10 yards of travel time minus the box motions distance.
To make it easier
You can make the Box 10 cubic meters on the inside instead if you
wish. so it will have 10 meters to travel minus the motion of the
box's distance from the small masses force upon the box to move.
The device the "shoots" the ball will be in a smaller box embedded
in the wall so it will have the entire 10 meters to travel.

So this box is somehow able to keep pushing on the ball
for the whole trip, and is anchored to the wall of the
container. Okay.


Also, is the mechanism that accelerating the ball
anchored to the box?

Of course it is.
That is what this is all about.
Moving the larger mass of the box from the motion of the acceleration
of the smaller mass causing such.
Sheesh Greg.
Can you keep track of what we are talking about at all?

I could if you would state the conditions clearly the first
time instead of leaving so much out and the rest open to
interpretation.

Now, one more thing. Is the stated acceleration with
respect to the little box attached to the container wall,
or with respect to the original rest frame prior to the
launch?

Also, would you consider changing the yards to meters to
keep all the units in the metric system for consistency?
Otherwise we have to perform conversions that don't add
anything of value to the problem.

.

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