Re: No free lunch

nospamplease wrote:
Spaceman wrote:
nospamplease wrote:
Spaceman wrote:
nospamplease wrote:
Ask any high school
graduate, in order for your 45kg mass to float, it
must displace 45kg of water.
Ask them also why you are wrong.
Do you think that the entire mass is displaced when
it "floats"

Yes. 100% of the time, 100% of the mass of an
object must be displaced for it to float. If that
requires less than 100% of the volume of the
object, then it floats, otherwise it sinks
(density at play here).

Try a simple experiment for yourself.
A cubic foot that floats half way
only displaces 1/2 a cubic foot of water.
and the water will rise 1/2 a cubic foot ,
(the displacement) in the container.


Agreed. But did you also know that your object
must have a mass of ~14kg and a density of 0.5.


No 100% water displacement is occuring
only 50% in such.

Dude, make up your mind, are you talking about
mass or volume? The laws of physics require that
100% of the mass is being displaced. The
percentage volume of the object being displaced is
dependent on its density. You've indirectly said
its density is 0.50 by saying it was displacing
half its volume.

Dude,
the mass makes up the volume.
50 % of the mass is 50% of the volume.


If I make it sink, 100% of the cubic foot
will make the water rise 100% of the cubic foot.
You really should try to check this out
in an actual experiment.
I have.
in gradeschool.

I don't need to try that experimentally. I already
know it's true. You know the difference between
mass & volume right?

Yes,
I also know that percentage wise they equal.
50% of the mass = 50% of the volume in a cube
like I used.

Try to cut a cube in half and tell me that you
do not have 50% volume in each piece
and then tell me that you do not have 50% mass.
C,mon man.
Don't think like a textbook,
think like you are thinking for your own self
instead.

It was a cube.
I could see if I said boat,
that would make a big difference,
but I said cube.


--
James M Driscoll Jr
Spaceman



.

Relevant Pages

  • Re: No free lunch
    ... graduate, in order for your 45kg mass to float, it ... must displace 45kg of water. ... object must be displaced for it to float. ... only displaces 1/2 a cubic foot of water. ...
    (sci.energy.hydrogen)
  • Re: Chez Watt: There can be no Evolution by natural selection DJT
    ... The trapped air displaces ice that would otherwise occupy it's volume. ... Thus the amount of water, per unit mass, displaced is increased. ... the berg will displace more water is if you add mass to it amd adding ...
    (talk.origins)
  • Re: The Problem of the Missing Constant
    ... but why does ice float? ... ***{It floats because it expands when it freezes. ... The mass of the frozen ... water didn't change, but its volume increased, when it froze. ...
    (sci.physics)
  • Re: Superman
    ... entirely ignored the difference in density between brine and fresh water. ... Consider an iceberg with a mass of 1 metric tonne. ... displace 1 tonne of seawater - a volume of 0.974 cubic metres. ... rock is greater than that of water it will displace more water when floating ...
    (sci.geo.satellite-nav)
  • Re: No free lunch
    ... graduate, in order for your 45kg mass to float, it ... must displace 45kg of water. ... object, then it floats, otherwise it sinks ... only displaces 1/2 a cubic foot of water. ...
    (sci.energy.hydrogen)