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DaTario's latest activity
DaTario
replied to the thread
I
Dropping an extended Slinky -- Why does the bottom of the Slinky not fall?
.
Yes, I saw a subtle longitudinal wave rising from the lower end. It seems to behave as Wilberforce pendulum with almost zero moment of...
Apr 9, 2024
DaTario
replied to the thread
I
Dropping an extended Slinky -- Why does the bottom of the Slinky not fall?
.
So if we filmed the slinky from below from the moment it was released with its lower metal end painted green as in the picture below, we...
Apr 9, 2024
DaTario
replied to the thread
I
Dropping an extended Slinky -- Why does the bottom of the Slinky not fall?
.
but strictly speaking ##s## is not position, but rather a dimensionless quantity that points to the given position, isn't it?
Apr 8, 2024
DaTario
replied to the thread
I
Dropping an extended Slinky -- Why does the bottom of the Slinky not fall?
.
Thank you. In fact, you had already informed me before (post #110) that ##u'## was ##du/ds##.
Apr 8, 2024
DaTario
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Orodruin's post
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Dropping an extended Slinky -- Why does the bottom of the Slinky not fall?
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Gladly. It does not relate to Hooke’s law - it is Hooke’s law The more commonly shown form of Hooke’s law is ##F = kx## where ##F## is...
Apr 8, 2024
DaTario
replied to the thread
I
Dropping an extended Slinky -- Why does the bottom of the Slinky not fall?
.
When we consider the physics of toppling dominoes we clearly see a set of dead times which are basically those intervals between the...
Apr 8, 2024
DaTario
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I
Dropping an extended Slinky -- Why does the bottom of the Slinky not fall?
.
Dear Orodruin, I am a physicst and I am ashamed of the gaps I allowed to exist in my training as a physicist. But could you please...
Apr 8, 2024
DaTario
replied to the thread
I
Dropping an extended Slinky -- Why does the bottom of the Slinky not fall?
.
At the end of it, may be, but IMO not at the stage this problem is usually presented. In fact, I think that the vast majority of physics...
Apr 7, 2024
DaTario
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A.T.'s post
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Dropping an extended Slinky -- Why does the bottom of the Slinky not fall?
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The level of idealization and the time point of cutting the spring need to be defined more precisely here. If the tension between loop...
Apr 7, 2024
DaTario
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I
Dropping an extended Slinky -- Why does the bottom of the Slinky not fall?
.
I think I understand what you mean when you say physics is not a matter of opinion. I had not done the calculus of this problem. All I...
Apr 7, 2024
DaTario
replied to the thread
I
Dropping an extended Slinky -- Why does the bottom of the Slinky not fall?
.
In both systems we have: 1) a subsystem whose mass and size increases in time. 2) another disjoint and complementary subsystem...
Apr 6, 2024
DaTario
reacted to
A.T.'s post
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Dropping an extended Slinky -- Why does the bottom of the Slinky not fall?
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They are articles about it, but I cannot access them...
Apr 6, 2024
DaTario
replied to the thread
I
Dropping an extended Slinky -- Why does the bottom of the Slinky not fall?
.
I remembered yesterday one argument that can clarify the kind of explanation I am seeking. It is related to the plucked string problem...
Apr 6, 2024
DaTario
replied to the thread
I
Dropping an extended Slinky -- Why does the bottom of the Slinky not fall?
.
The problem is that with the slinky, the mass is the spring.
Mar 26, 2024
DaTario
replied to the thread
I
Dropping an extended Slinky -- Why does the bottom of the Slinky not fall?
.
Orodruin and A.T. I understand your points and they seem ok to me. As I said, my point is weakly supported, I will no longer defend it...
Mar 26, 2024
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