Re: No Upward Force of Gravity BZ.


bz wrote:
> macromitch@xxxxxxxxxxxxxxx wrote in news:1114392313.134107.134190
> @g14g2000cwa.googlegroups.com:
>
> > They are equal and opposite forces my friend!!!
> > It is wrong to say that gravity is reponsible from an upward
> > force. The upward force exists by virtue of a downward pressure.
>
> They are equal and opposite forces.
> The upward force exerted by the ground is equal to the downward force
which
> is due to gravity.
The downward force of gravity is throughout the body.
THe upward pressure is on the surface of the feet only.
>
> > Why would the ground push harder on certain things than others?
>
> I weigh 210 lb. I stand on one toe and exert 210 lb per square inch
on the
> ground.
> The ground resists. It exerts 210 lb of force on me.
>
> One of my pet turtles stands on 4 feet that have a total of 1 square
inch
> of area. The turtle weighs 1/2 lb. The turtle's weight exerts 1/2 lb
per
> square inch on the ground.
> The ground exerts 1/2 lb of force on the turtle.
>
> I stand on a shovel that has a contact area of .01 square inches with
the
> ground. It sinks into the earth until the earth again exerts 210 lbs
of
> force.
>
> That answers your 'why' question, doesn't it?
>
>
> > You can't answer that!
> > The downward pressure is absolute the upward only relative
> > to that absolute.
>
> The downward pressure is no more absolute than the upward pressure.
The downward pressure or weight is gravity.
The upward pressure is not gravity. There is no upward weight
throughout the body.

You're full of boloney bz!!!
>
> --
> bz
>
> please pardon my infinite ignorance, the set-of-things-I-do-not-know
is an
> infinite set.
>
> bz+sp@xxxxxxxxxxxxxxxxxxxx remove ch100-5 to avoid spam trap

.

Relevant Pages

  • Re: No Upward Force of Gravity BZ.
    ... The upward force exists by virtue of a downward pressure. ... It exerts 210 lb of force on me. ... One of my pet turtles stands on 4 feet that have a total of 1 square inch ...
    (sci.physics)
  • Re: No Upward Force of Gravity BZ.
    ... The upward force exists by virtue of a downward pressure. ... >> is due to gravity. ...
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  • Re: Zero-g Question ?
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