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Re: What has stopped rotating?

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  Re: What has stopped rotating? The Starmaker <starmaker@ix.netcom.com> - 2023-12-02 11:00 -0800
    Re: What has stopped rotating? Physfitfreak <Physfitfreak@gmail.com> - 2023-12-02 18:23 -0600
      Re: What has stopped rotating? The Starmaker <starmaker@ix.netcom.com> - 2023-12-02 20:02 -0800
        Re: What has stopped rotating? Physfitfreak <Physfitfreak@gmail.com> - 2023-12-02 22:35 -0600

#883246 — Re: What has stopped rotating?

Paul B. Andersen wrote:
> 
> Den 02.12.2023 03:34, skrev patdolan:
> > On Friday, December 1, 2023 at 4:20:14 AM UTC-8, Paul B. Andersen wrote:
> >> Den 30.11.2023 21:12, skrev patdolan:
> >>>> On Wednesday, 29 November 2023 at 22:51:11 UTC+1, Paul B. Andersen wrote:
> >>>>> Den 28.11.2023 20:53, skrev patdolan:
> >>>>>> On Tuesday, November 28, 2023 at 2:38:09 AM UTC-8, Paul B. Andersen wrote:
> >>>>>>>
> >>>>>>> Second challenge:
> >>>>>>> A long heavy pendulum is hanging under the ISS.
> >>>>>>> A stable situation is that the pendulum is always
> >>>>>>> pointing towards the centre of the Earth.
> >>>>>>>
> >>>>>>> Which forces are acting on the pendulum mass?
> >>
> >>>>>
> >>>>>> Neither the sun's gravitational field nor the earth's gravitational field exerts a force on the pendulum you discribe. Because the pendulum is in free fall around both. Only Mach's mysterious trans-universe space-brace field acts on the pendulum and the ISS gyroscope.
> >>
> >>>>> According to Newton:
> >>>>>
> >>>>> The gravitational force on any object with mass m is
> >>>>> always GMm/r² pointing towards the centre of the Earth.
> >>>>> If the object is free falling, the gravitational
> >>>>> (coordinate) acceleration will be GM/r², pointing
> >>>>> towards the centre of the Earth.
> >>>>>
> >>>>> The CG of ISS + pendulum is moving in circular orbit,
> >>>>> which means that the acceleration is perpendicular to
> >>>>> the velocity, so the acceleration ω²⋅r₀ is the centripetal
> >>>>> acceleration which make the ISS move in circular orbit.
> >>>>> The centripetal acceleration is equal to the gravitational
> >>>>> acceleration:
> >>>>> ω²⋅r₀ = GM/r₀² (1)
> >>>>> where ω is the angular velocity off the ISS, and r₀ is the
> >>>>> distance from the CG of ISS+pendulum to the centre of the Earth.
> >>>>>
> >>>>> Equation (1) say that an object with angular velocity ω
> >>>>> must have a distance from the centre of the Earth:
> >>>>> r₀ = ∛(GM/ω²) to make the centripetal acceleration equal
> >>>>> to the gravitational acceleration.
> >>>>>
> >>>>> The pendulum mass m is not free falling because:
> >>>>>
> >>>>> Its distance to the centre of the Earth is:
> >>>>> r₁ = r₀-L where L is the length of the pendulum.
> >>>>> So r₁ < r₀, but the angular velocity of m is the same ω,
> >>>>> and r₁ < ∛(GM/ω²), which means that:
> >>>>> ω²⋅r₁ < GM/r₁² (2)
> >>>>> The centripetal acceleration is smaller than the gravitational
> >>>>> acceleration, so the force the string is acting on
> >>>>> the pendulum mass is F₁ = m⋅(GM/r₁²-ω²⋅r₁)
> >>>>>
> >>>>> ---
> >>>>>
> >>>>> An interesting point is that you could have a pendulum
> >>>>> on the other side of the ISS, pointing outwards from the
> >>>>> centre of the Earth.
> >>>>> The force the string is acting on the mass m is:
> >>>>> F₂ = m⋅(ω²⋅r₂-GM/r₂²)
> >>>>>
> >>>>> F₁ and F₂ are called tidal forces.
> >>>>> (It's a tidal bulge on both sides of the Earth)>> No comment, Pat?
> 
> >>
> >> You claimed that there were no forces on the pendulum.
> >> I showed you that you could have a pendulum on both
> >> sides of the ISS, and the pendulum strings will exert
> >> forces on the pendulum masses, acting towards the ISS.
> >>
> >> And GR predicts the same!
> >>
> >> Do you realise that you were wrong, but won't admit it,
> >> so you ignore my post, hoping that nobody will notice
> >> your failure.
> >>
> >> --
> >> Paul
> >>
> >> https://paulba.no/
> 
> >
> > Paul, I am happy to comment on the ISS pendulum problem.  But first I would like to exploit my leverage over you in this matter.  I will comment in a most shocking manner if you first agree to
> >
> > 1) State to this forum that the source of the gyroscopic counter torque which exactly opposes any torque placed on a gyroscope to keep it from falling over, as it does when a torque is applied to a g-scope when it is not spinning, is a complete scientific mystery and has never been derived from first principles.
> >
> > and
> >
> > 2) You stipulate that no matter what he types in this forum, Tom Roberts also does not understand the gyroscopic counter-torque.
> >
> > Do these two things and I will comment on your pendulum.
> 
> I accept your capitulation.
> 
> You make no attempt to defend your claim that no forces were
> acting on the pendulum mass. Instead of admitting that you
> were wrong, you are trying to escape in a most ridiculous way. :-D
> 
> Case closed.


Since our moon revolves around our sun...our moon is in fact a planet.
You can call it a dwarf planet and even a satelitte planet. But, it is
still a planet by defintion of a planet! 

There are more planet moons than there are any other type of planets in
our solar system.


i heard nasa is going to land on planet moon next year, is that true? 






-- 
The Starmaker -- To question the unquestionable, ask the unaskable,
to think the unthinkable, mention the unmentionable, say the unsayable, 
and challenge the unchallengeable.

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#883263

On 12/2/2023 1:00 PM, The Starmaker wrote:
> 
> 
> i heard nasa is going to land on planet moon next year, is that true?
> 
> 
>

With last of the pre-Reagan scientists dying off, NASA fears the 
know-how will get lost in the hands of post-Reagan "engineers". I don't 
see a single other reason for doing that nonsense stuff all over again.

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#883266

Physfitfreak wrote:
> 
> On 12/2/2023 1:00 PM, The Starmaker wrote:
> >
> >
> > i heard nasa is going to land on planet moon next year, is that true?
> >
> >
> >
> 
> With last of the pre-Reagan scientists dying off, NASA fears the
> know-how will get lost in the hands of post-Reagan "engineers". I don't
> see a single other reason for doing that nonsense stuff all over again.

maybe they are investigating what is that hollow sound?





-- 
The Starmaker -- To question the unquestionable, ask the unaskable,
to think the unthinkable, mention the unmentionable, say the unsayable, 
and challenge the unchallengeable.

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#883269

On 12/2/2023 10:02 PM, The Starmaker wrote:
> Physfitfreak wrote:
>>
>> On 12/2/2023 1:00 PM, The Starmaker wrote:
>>>
>>>
>>> i heard nasa is going to land on planet moon next year, is that true?
>>>
>>>
>>>
>>
>> With last of the pre-Reagan scientists dying off, NASA fears the
>> know-how will get lost in the hands of post-Reagan "engineers". I don't
>> see a single other reason for doing that nonsense stuff all over again.
> 
> maybe they are investigating what is that hollow sound?
> 
> 
> 

They want to eat up your money, and what they say they do all that for 
is to legitimize their eating up of your money.

The only sense, that exists, in doing that stuff all over again is to 
revive and maintain the knowledge before it is lost. With this way U.S. 
government is going, such knowledge, if lost, may not come back again.

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