wrote in message ...
Peter Duniho wrote:

"Jeet" wrote in message
m...
[...]
What the hell is going on? We can propel a body without
pushing/expelling any reaction mass and we can do it by simply giving
"sudden surge of force by our hand" to a body.

Please do not cross-post inappropriately. And yes, this is very
inappropriate for rec.aviation.piloting.

As far as your "paradox" goes, ever play on a swing? You don't need to
expell mass to move. You do need friction but your cot is not frictionless.


I agree with you more than the original poster, but on
a swing you pushing but not expelling reaction
mass. You're pumping the swing to convert the angular
momentum of your legs into angular momentum of the swing.

What he/she is trying to claim is that you can produce
motion without that and we both know that that's crazy.

John Anderson

I got pic for you...

http://www.geocities.com/abhi_yaan/action08.jpg

You can see wooden bar placed on two metal rods over cot. I am sitting
over that wooden bar you see with my body not touching cot.

I catch that vertical metal bar of cot you see with my both hands. All
my strength is concentarted in my hands. And I pull that vertical
metal bar with sudden surge of force towards me. The cot moves on
floor from pint A to point B. I tested it again and again. Also tested
by putting these metal bars and wooden bar on ground. Now tired
enough.

Central idea is to concentarte your whole strength in hands and pull
the cot towards you with *sudden surge of force*. Due to momentum of
cot, your body and whole setup also moves in direction of cot. Now
again sitting on cot, place the rods and wooden bars in inotial
position and by this way repeat again and again.

You will find that you are moving yourself, rods, wooden bar and cot
in room on floor from one end of room to other end.

As you have figured out by now, I am not using earth or taking support
of wall or any outside mass to move myself and cot.

Thanks!

-Abhi.